Growing up I exclusively played the Pro V1. When I got to high shcool, I played the Bridgestone Tour b330. I have a trophy case with all of my balls I won tournaments with. I think there's 20 in there (including the State Tournament) and 19 of them are B-stone.
When I got to college, I switched back to the ProV. Our coach insisted we play the X for windy days (30mph is a calm day where I went to college). I know they've since switched what the X and V1 do.
Since then...I've bounced between every ball too. Stones, tp5, tp5x, V1yellow....But am currently playing the Tp5 PIX and love it!