Feature:
These stick any where and haven't come off my drum set yet, they might eventualy come off if they become dirty over time.

Quality:
I give the quality an 8 because I havn't had them for to long and they seem like the might eventually loose there grip if you don't take care of them and keep them clean.

Value:
It's a great value if they last, but again I'm not sure they will last.

Desirability:
I personally love this product and i plan on buying two more because I have that many drum parts I want to have a one of these on.

Sound:
This product spectacularly helps the sound, all you need to do is find out were you want to put them on the drum heads or cymbals you put them on.

Ease of Use:
You just peel and stick them any where, it just might take a while befor you find out where you want to put them for the sound that you want (for example it took me maby 2 hours befor I had found the perfect spots to put them).

Overall:
I will mos def be EXTREMELY satified with this product for as long as it lasts.