Since Im not the first to say it, I feel better doing so - get the GT! Unless you are getting the V6 for under $20K, it doesnt make sense to pass up a GT at the moment.
base GT ALWAYS > Premium V6
As far as color - I say neither - white is a very bland color and doesnt do the lines of the S197 any favors. GIG is an attention drawing color and will draw too much (in my opinion) attention
2011 Mustang GT M6 3.31s
Matt HONEYCUTT Tune, Lethal Off-Road X, GT500 axlebacks, J&M LCAs, UPR UCA, Whiteline LCA relocation brackets, Eibach Pro-Kit Springs, Koni STR.T shocks/struts, GT500 strut mounts, SR Strut Tower Brace
Best 1/4 E/T (05/18/14 MIR - no tune, X-pipe, or UCA): 12.920 @ 109.40 mph (2.059 60ft)