I've been reviewing a lot of cases recently and I think I've finally narrowed my options down to the iSkin Solo or the Speck Candy Shell. I have a White 16 GB 3GS. I'm planning on either getting the While iSkin Solo or the Speck Candy Shell White/Red (Cranberry Trouffle...or whatever its called). Any suggestions as to why one is better than the other? Thanks!