High swing speed and golf ball selection?

I'm new to the forum so hello to all.

I have about a 14 handicap and have been getting a little bit more into golf in the past couple years. Today I went to the golf pro shop in search of a new driver to replace my old one that I've been playing since high school. I was fitted to a new R11 9 degree with an X-Stiff shaft. It is a big change from my old Taylor Made 540 XD with a regular shaft with a soft tip or something. I knew the shaft was a little too soft for my swing but didn't think it was as terrible for my game as it was. The golf pro couldn't believe how I was able to play it for the past 8 years but I had basically adapted my swing to make my driver manageable (barely).

Anyway, on to my question. I realize now that I probably don't know enough about the equipment as I should after realizing that the regular shaft was causing a lot of my troubles. This is where you guys come in. At the pro shop they had all the gizmos and gadgets with the virtual screens and speed monitors. On both monitors my average swing speeds were in the 125-131mph speed range with ball speeds around 187. I currently play Titliest ProV1's which I am relatively happy with and began to wonder if these were the right balls for my game.

The Bridgestone ball fitting crew happened to be at the pro shop today as well and I did the whole ball selection thing and they had determined that the best ball for my game would be the B330 Tour. I've heard a lot of good things about the new Srixon Z series balls and am currently happy with the Titliest balls I'm playing now. What balls do you guys play or recommend?

Thanks,

Ben

The main thing here is going to be personal preference and which ball you feel more confident with. I did the same thing, I was playing the Pro V1s and got fitted for the Srixon's. I switched to them and a month or two later switched back to the Pro V1's which I'm very happy with. Btw my swing speed is 121 average.