I was using some old sleeves with my cymbals and there was some rattling because they were brushing up against the scuffed up part of the sleeve. I decided to order these and they are great. They do the job, and I find no more rattle. They don't wobble on the stand, they stay in place.
They serve their purpose and they seem like they will last an eternity. If you are looking to tighten your cymbals, I would suggest buying these short sleeves and using Gibraltar's long felts, maybe on a ride cymbal or something that you don't crash, as that can be damaging.
In conclusion, I see no purpose to buy any other sleeve or any other protective covering! Great purchase.