Kept this one, though I prefer earlier model. ...
354068
Kept this one, though I prefer earlier model.  I understand safety mechanism, having to push button on top while pushing start button,however, being small my hand isn't big enough to push both at the same time
383149
Found the old one so I didn't need the new one after all.. I will keep it for future use if needed
4732128
APPEARS TO BE AN OLDER MODEL.  Much heavier than most current models, especially the display screen.  Slow.  Muddy display.  I returned it.
3083893
One of my favorite flashlights.  It is a "thrower".  The "HP" models have a large parabolic reflector that will outshine most other flashlights at a distance.

I had the older (one mode only) version, and misplaced it, had to just buy the latest version (with "Ten-Tap" programming, a little brighter, and some other changes I get into below) for an event I was heading to.  This is the listing for the older model I purchased online, but unclear if they are now selling the newer one or not. (Picture  shows the new model in black.)

I like the high-performance beam combined with lightweight plastic and high-visibility yellow.  The older model had no offensive features on it.  For my purposes, want the flashlight to clearly *not* be a weapon, which can hard to achieve with a high-performance flashlights.  Unfortunately, with the other changes, the new model has added offensive "teeth" to the bezel and tailcap. I'd prefer not to have them, and they are pretty silly on a plastic-bodied flashlight. I might sand them off.

I don't like the new multi-mode ten-tap programming, but it mostly stays out of the way.  There is a convoluted method to lock the flashlight into "on-off" mode only. When I'm using this flashlight, I  want a maximum brightness spotlight.

My one-star off is for the new teeth and not-so-useful programming.
497932
Needed to replace my older version, love the updated model.
2487013
I PREFER THE OLDER ONES. I HATE THAT I HAVE TO CHARGE THIS :(.
4959759
While this model has features that the previous model didn't, the previous model was easier to handle and the bag was more substantial. The metal impeller is a good idea since you never really know what is under the debris you pick up. The variable speed is helpful for when you don't require much force. I hope this one holds as well as the previous model but I have reservations on the bag.
1021840
I bought this to replace the previous model because the battery seemed to loosing power early. This looses power ever earlier and is heavier. Does not use the same filter as the previous model, so if you have many filters, like I do, it is a loosing investment.
If you have the earlier model, like I do, do not purchase this. If you don't one one, this is a fine solid product.
3006380
While this is a great little device, it isn't as good as the prior version. Unfortunately, that version (WKB-300UB) has been discontinued and is nowhere to be found. I still have my old model and beats me why they changed it. This one is slightly smaller and lacks some ergonomically well placed buttons of the old version. Some keys are smaller and have been relocated. These apparent cons to me are only because I have the old version to compare it to. If you're starting off fresh, looking to replace a separate standard keyboard and mouse/trackball, you'll enjoy this all in one device.
1003742
I had an older model and it was 10x better than this one. Not really impressed with the new version.
3045638
I wound up returning this for the Littman Classic as I don't plan on needing to replace it unless I lose it. The diaphragm on this model is much lighter as advertised. I don't particularly care for the look of it. I do have a fellow classmate that has one and likes it.
4681781
I liked the old model from Salton that had a switch built into the warmer body.  The in-line switch on this model is not as convenient to use.  Otherwise it is fine.
2621377
I have a much older version of this.  This one seem "backwards" but I am getting used to it.  VERY strudy
921449
I thought I can keep it in my backpack but it's just to heavy...go with the older version

Other than that it's the same feature, more power to charge.
2849798
Much faster than older versions. I did like the size of the older models as this one
feels a bit more fragile. Otherwise you need to get one.
4923809
I have to agree that I like the older style better as well.  I have bought dozens of the older style and was a little disappointed with this new style.  With the old style, you could remove the plastic insert within the handle and store all 4 bits within the handle.  The old style bits and handle also seemed to be built to slightly better tolerances and slipped in and out of the holder better yet held firmly.  Still, this one is okay compared to some of the cheaper versions out there.
3311324
I received the older model that does not have the stabilizer plate... returned it.