don't twist as easy as the originals did
348265
They fit well, don't twist as easy as the originals did, and the price was great.
2518914
These do what they say they will do, but aren't of the same quality as the originals. The price however is very reasonable, and for that an average item gets and extra star.
3759071
These look more user friendly than the original power push up.  However, if you want them to do the twisting motion you have to do the push ups on your knees.  I tried to do dips with these, that was too difficult.
3081061
Good replacement if your original didn't tear the hole larger than this cylinder,  otherwise try the screw in kind.  This one glides easier than the original hardware so the "catch doors" are actually cloesable without feeling like you are slamming them.
2461535
I like these better than the original tops.  My straws would often dislodge themselves while I was in transit and then I'd have to screw off the whole lid.  Unscrewing the chute lid is easier.  Also, I had somehow lost the lids for some of my bottles and that part couldn't be ordered the way I've ordered bitevalves & straws over time,
173718
I like the bands, I don't like the pinching and moving and twisting of the bands
870320
Had them fitted, greased and installed on my Reliant 16" band saw within one half hour ( blade was already off ). I was also trying to move mine with the table and smashed them both. The originals seem to be somewhat  flimsy compared to the new ones. Glad I found these!
1708425
Bought these to replace some of my older ones that I lost along the way. These newer ones are not as tight as the old ones and I've had a couple slip off my clubs.
4763776
I like these thumbsticks a lot. They are stiffer than the originals and do require some white lithium grease to make them smooth, but after that they are quite playable.

These can take a lot more abuse than the originals
2730525
I got my original unit used at a really good price.  The original headphones were extremely loose and fell off whenever I bent over.  The last time, the headphones shattered into several pieces.  I bought a replacement set of headphones and was pleased that they fit a little tighter.  Unfortunately, this lasted about a week.  The new ones are as loose as the old ones were.  The sound is great but I have to be careful not to bend over because I won't buy a third set.
4811059
I goofed on this. Didn't realize it wouldn't fit my classic. However I was able to get it in and ran with it a few times. I prefer the original twist top. The new quarter turn top is a pain to close. Didn't notice any difference with the baffle, still made the same swishing noise on my back. The mouthpiece works fine.
1855383
Not as good as the original, but if you're a moderately sized person and don't need the resistance of the original, this will be fine.
311114
suppose to be twist free. No way twist as bad as any line
4315202
Took a couple minutes to figure out how to snap them on, but the ear pads seem to be solidly on now.  They aren't as soft and comfortable as the originals, by any means, but they seem to still provide decent noise isolation (again, not quite as good as the originals).  For the price, I won't argue.  Maybe they'll soften up with time somewhat; the previous ear pads I had were well-worn, to say the least.
258295
They are the harder plastic rather than a bit softer plastic like the originals. I find that these harder plastic lids eventually become misshapen or even crack. To be clear, I haven't had these long enough for this to happen, so these have not become misshapen nor have they cracked. I would have liked to know whether they were more like the original lids or not, though, before I ordered.
516743
They get the job done fine, and I don't think I have the same fit issue that other's have expressed. The biggest con is that the are a good bit stiffer that the originals and other replacements that I've purchased, which makes them far less comfortable. Once these wear out, which I get a sense won't be too long, I'll likely look for a different replacement set.
723195
They were great, mounted well and well made. Fit perfect. But they don't have the safety catch that the originals do. If they break them they will fail utterly. It my fault, i didn't know the difference.