Test drive one though..and I would go with the touring over a base. The base seats are a bit too firm as a DD.
I had a '10 Roadster, it bit the dust, but that was because the dealership I bought it from owned it prior and bagged it. I wanted a Roadster over the Coupe as its just a more fun car to drive..but no roadsters were available.
They gave me a '11 coupe and its nice, but I couldn't keep it stock - main reason is because the stock sound of a Z is..well not for everyone. Once you do the mods though it comes alive and well is just that - a muscle car
Buy 2011 or 2012, touring with sports package and you'll be set, as for color its your choice.