I love the coupe, and the G37 coupe is very hot. It has always been described (amongst the Nissan community) as being the 350Z in a tux. The VQ is a solid motor, even if not the most mind-bending in the power department. I've only ever ridden in a turbocharged one... so I can't offer any opinions on power/driving feel.
If you're looking for a great DD with decent power, I'd definitely go for it. There is plenty of aftermarket support if you want/need it as well.