Best TPU Case for RAZR is the Nillkin. You can find on eBay (like
THIS). (Make sure to search for "Nillkin TPU Razr" because Nillkin makes hard cases as well.)
Case comes in solid matte black and transparent blue, clear, or gray. Grips on side. Precision cutouts for everything. High-quality without the seams or "nubs" present on other TPU cases. Adds almost nothing to profile or weight of phone, but protects phone.
Takes about 2 weeks to receive, but worth it! I got the transparent gray, which allows the good-looking Kevlar back to show through.