Solid testimonial; they're my 2nd pair
348034
This is pair #2. First pair served me well, working at an inner urban high school. They took a beating, as I wore them almost daily, which is supposed to shorten the operational life of shoes.

Would I buy another pair? I just did!!!
750607
Better than expected and worth the money - my wife loves them (loves them enough to buy a second pair)
3905694
I have an old pair of NB 730s (from before they completely redid that series), also in size 12 4E, and I've worn them into the ground because they fit well and feel good.  And I wear all of my shoes with a pair of Spenco 3/4-length orthotics, which makes a difference.

Now, these are obviously two different shoes.  The 730s are mostly mesh with plastic, and made for cushion while running, and the 659s are cloth and leather, and made for support while doing something between street and trail walking.  Also, two years of wear have stretched my 730s, and I just pulled these out of the box this morning.  But while these 659s seem a bit snug out of the box, they also seem to be reasonably true to size both with and without the orthotics.  We'll see how the leather and cloth shape out.

But otherwise these are remarkably similar in overall feel.  Plenty of room in the toe box, grippy outsole, supportive midsole, very low and gym-shoe like for something otherwise built to look like a hiker.  The cushioning is definitely firmer, though how much of that is two years of wear in the old shoe is hard to tell.  The outsole is narrower in the toe by half an inch inside, because it's straight, where in the runner it angles out for more grip surface.  The toe box doesn't seem appreciably narrower, though being made of sterner stuff it presses against the widest point of my foot.

I would definitely have left the store with these, if I had tried them on in a store.  Time will tell if I can keep wearing them, or if the snug fit is too snug for me to wear comfortably all day.

------

UPDATE:  Two days of wear, standing and walking both indoors and out, and the shoes are perfectly broken in.  In some of my other shoes, when my feet swell at the end of the day, the sides are restrictive.  These give me no such trouble.  And with winter coming here in WI, I feel like I won't have trouble with thick or doubled socks, which is especially important with wide feet!

The cushioning is very good for heel strikes.  I don't feel like I'm losing any energy from my stride, especially in hard city walking.  I'm obviously not doing any serious track or road running in these, but it's easy to break into a run if I need to, the shoes aren't too heavy-feeling, and they have very good heel-toe roll.

Other notes: the inside of the shoe has a loose insole (as in "not glued down," not as in "it moves around"), which is a nice feature.  I usually wear through the big toe area, and this means I can more easily replace the insole when that happens.
3080988
So nice that I ordered two pair......1 for myself and the 2nd for family member
233215
Almost every day use for the past year and a half and they're still going strong will be buying another pair here soon
4552453
I bought a pair of these locally from Gander Mountain on clearance and absolutely love them.  I've had them about two years and wear them, hunting, camping, hiking, motorcycling, and in any other situation where I'm looking for protection and ankle support.  They have held up very well and are extremely comfortable (after break-n period).  I've never done it, but I'm confident I could run comfortably for miles in these.  If I ever need another pair, I'd get these again, no question.
2269478
Purchased a second pair, the reason why, because they are just that good.
1410028
Comfortable, good quality, and reasonably priced - I love them!
280548
This is my second pair of Fusions, and I'm now ready to buy a 3rd, after wearing them nearly every day for a solid year. I'm not outside, I work at a computer, but even so, I walk around quite a bit before, during, and after work, and on weekends. These shoes have never failed me. The laces are insanely durable. The only thing that wears out is the sole, which is understandable: the sole cracked (both pairs) after awhile (a year) at the bend in the foot, and because I "overpronate," the heels wear out unevenly. The only thing to do about that would be to get orthotics, I guess.

All things considered, I'm wearing out 1 pair a year (actually 13 1/2 months) where I would be wearing out 2 or 3 pair of something like Skechers purchased at a shoe store. AND these shoes are comfortable and give outstanding support from the get-go. Oh, one minor thing, this last pair had a spot that came unstitched, but by golly, the stitching didn't continue to "run" or pull out. Just that one spot. That was 4 months ago, and I was considering getting it stitched up at a shoe repair place, but didn't get around to it. Now, the sole cracks, right on schedule. Time to ante up the <"gulp"> price, but you get what you pay for.
1470666
Review and (kind of) update to the original review I never wrote:

(What I would have said originally) - I really, really like these headphones; they're excellent for my primary use - the gym - and my favorite pair for hip hop,rock, trap, and bass-heavy music.  The bass is crisp and substantial, they'll get louder than ears should handle, all while maintaining clarity.  Very nice build quality, right down to the wiring, which feels above average.

(Update) - After using these for a year and a half, one side started cutting out, which is how every pair of headphones I've owned fails.  I'm careful to prevent strain around the jack when I wrap the headphones, usually by leaving slack in that area.  There was no visible damage/fraying.  I contacted the company and went through the steps of confirming the issue by cleaning it thoroughly and replicating the problem on another device, which happened right away.  I followed their protocol - cutting up the damaged headphones, taking pictures, and submitting them via e-mail - and they sent me a new pair QUITE quickly!  I actually don't know if there's a warranty or how long it is, or the role Big Brother Amazon plays in companies complying, but the end result was very customer friendly.

Bottom line, the headphones are awesome and well worth the money.  I also commend the company for standing behind their product and making the replacement process quick and easy, should a problem arise.
2027494
4 years of almost everyday use out of the first pair. Bought them again
4941222
I'm on my second pair, but the first pair is still in great shape. I've been using the first pair in construction for about 1-1/2 years. Slipped a pair of quality insoles in them and haven't looked. back. My feet are so grateful for the relief that I often wear them on weekends, shopping and so on. I am kind of a 'supervisor type', so my form of wear and tear is standing and walking. I only mention this because some work boots are likely more stringently built for abuse. These are just great for normal construction site use.
201239
I wore these hard for over a year of heavy construction. They were the most comfortable boot out of the box, and they remained just as comfortable until I finally punctured the soles too many times to keep wearing them. They are a very durable boot. I loved them so much I bought them again.

My experience with the second pair was different. The plastic eyelet at the top of the boot broke off the second time I tied them. It was too late to return them to Amazon. So, I contacted Keen, and they replaced them with a full value coupon to their own web store.

In short, these are awesome boots, and, in the rare event of defect, Keen stands behind their product with great customer service.
3553394
I bought a pair awhile back and like them so much that I bought another pair,they are as good as the first pair.
54462
I have needed a new pair of NB 623's for some time now, and I have been hesitating strictly because of some of the recent negative reviews. Finally, one of my laces gave out, so I decided to suck it up and give these a try. I have to say I am impressed with the look, the fit and the comfort! Usually I dread getting a new pair of shoes because I can only wear them for 2 or 3 hours at a time until they break in. With these, I was able to put them on, go for my daily walk, and continue wearing them as long as I pleased.

I don't know the version of my old pair, but I know I have had the old pair for at least 3 years (as I bought 2 pair at the time), but one identifier of the older pair was the "623" is in an oval on the heel (white numbers on a navy background) -if this helps any aficionados do a comparison. Whatever the case, I am impressed enough to order at least one more pair to set aside for later.
3993790
I bought my first pair over a year ago and have been wearing that pair almost everyday working at a ski mountain and on a ranch. I have beaten the hell out of them, and I'm buying another pair because of how much I like them and to prepare for the upcoming winter months. 100% would recommend. Take in mind this is after one year of abuse
4916800
Love these so much, I bought a second pair!!!