I actually have no idea how it performs versus the old version! I haven't even laid eyes on it yet in person! I'm sure we will get some test versions in the office soon. Will let you know when I get to smack them around.
I'm very interested to see how this new ball compares to the old one, especially wind performance. I like everything about the current ProV1 except how it performs in the wind and that's the main reason it isn't my gamer currently.