Easy. You want cornering, comfort, and looks, go ZL1. You want cheaper, faster 1/4, more power, cheaper parts, and better resale, buy GT500. Anything with Shelby will hold value.
2011-Black LS3 2SS/RS-SOLD
2007-Victory Red C6-Magnacharged (M112 Intercooled), B/B Bullets, Lingenfelter Hood/Tune/Valve Covers, AR Catted Long Tubes, K/N Drop Ins, much more