I just received my Amzer silicone/jelly case and it is really really good for the price. It is not flimsy and has a good solid fit around the nexus s. The sides are a little loose but still have a good fit. It is not bothersome at all.
It does not add that much in terms of size and it does add very little weight. I like this since without the case the phone felt light but this added weight does wonders and adds to the overall feel.
The power button and volume rocker buttons are not cut out but there are notches to indicate where they are. I believe this is a plus as it adds that extra little "click" when you press them. I hope that makes sense.
I have put my phone in my pocket and did not notice any large amounts of dust or lint. Nothing out of the ordinary.
This case was definitely worth the $10. I'd recommend this case over the cheap BB case they were offering for $35.
Also, Ive always used hard cases before for all my old phones and this was my first time using a soft silicone case.