I had an 05' G35s, while I occasionally miss the comfy seats and my navi, the power and handling doesnt compare, not even close. I had full bolt ons, I/H/HFC's/Exhaust, Tein Street dampers w/EDFC and it still didnt pull as hard as my Z, so while you probably arent as used to having a better performing car, it will grow on you, drive it more. I, to this day, still look for excuses to get out and drive it, i've had my car since July 15th, and already have 5.5k on it, every time I get out, I still gaze lovingly at it as I walk away, my dates usually hate this