....Better batter life (significantly) and a slot under the a battery cover for removable memory for an MP3 player. I find this irrelevant but some may like this feature.
you know i have had my razr for the past 2 months now and i can honestly say that its been the best phone that i have owned after i had my digital star tac (which they should have never discontinued) and i have had a few samsung phones too and i found them to be highly unreliable. but for me i would go with the RAZR. hopes this helps you out.