My 370z is the first auto I've had so can't compare it to others, in manual mode it will change down for you when u slow down,syncro rev is there when u manually change down which is nice when u have a aftermarket exhaust ( stock one is way too quiet)
The paddles work well, seem quick to change, again I have nothing to compare it to.
Mpg is around 18ish for me about town, don't look that often tho, it is a 3.7 litre so never gonna be that great.
Best to test drive one as only you will know if its the car for you