Firstly, of course this is a great controller I imagine anyone who uses a PS3 nowadays uses the dualshock 3 controller and know who good it is compared to after-market ones.
Note (SONY and everyone) my only complaint with these:
I don't know if it is just me but R3 and L3 buttons too easily develop a defect and become "sticky" rendering them usless. In my case that equates to around 4 months of regular to hard usage.
So the only difference is the colour.
Personally, I will from now on be buying silver. It just looks so classy and I am willing to pay the couple of quid extra for something I use everyday. So upon my next R£ /L3 episode, I will be buying silver again