The performance difference between Auto and Manual for most cars has narrowed significantly in my view. The biggest drawback is that the PP is not available with the GT Auto. I drove a GT Auto for six days while on vacation and I can definitively say that in sports mode using the paddles, you will shift as quickly as a manual and will have lots of flexibility. Two flicks of your wrist and you have downshifted 2 gears immediately. The shift paddles on the steering wheel could be positioned better mind you.