I have had both, and both are excellent straight out of the box and even better when tuned, although aesthetically in my opinion the Pro Sport is the better looking by far. When I was messing about with air rifles I always fitted v-Mach kits but sadly these are no longer available although there are other tuning kits around.
Personally I always preferred the Pro Sport, but at the end of the day it is down to your own personal preference.
Happy shooting mate.
Neil
Current airguns:- Steyr LG110: Steyr LP10: Air Arms HFT500: Weihrauch97 fully customised.