Everybody always mentions the spin, added distance, soft feel around the greens, and overall performance characteristics inherent to the Titleist family of golf balls (which are all noteworthy!).
I just want to add one thing to that list. The balls LOOK great. The ball is the last thing that you look at before you swing and it is what you are focusing on before impact. I believe the sharp look of the Pro V1, or whatever your Titleist ball of choice is, gives you the confidence you need to pull off that low draw you need to get around the dogleg.
Fairways and greens.