I'd go for the black one. 36k mile warranty would be the biggest reason. It might have 20k more miles but with all the problems these cars have I would go for the one under a longer warranty. Plus it's a one owner and the color you want.
'07 E90 MT Sports Package l RB Turbos l JB4 G5 with Race Backend Flashl AA CP, BOV, and IC l Modified Injen DCI l Raceland 2.5" DP's l M2 Dual 2.75" Exhaust l