I love the TPU case for my Bionic, so picked up one for my g/f's RAZR. TPU-CASES.COM, - All TPU Cases Shipped Free in the USA Real cheap, usually have some good coupon codes.
The TPU material feels better, IMO, than the Silicon case from VZW. It's also 1mm thinner, yet provides a bumper around the screen. The fit is tight, unlike the VZW Silicon case.
Here's some pics