I don't know, but its weird AVX is still not listed as an option in My Pro V1.

Love the Avx , I to would like to see it offered in custom lettering & numbering as well .
gb

Now's the time to personalize AVX's, Titleist personalize all ball models right now free.

I have switched exclusively to the AVX. I love the way it handles around the green and on short shots. Off the tee, it is not even close as it definitely goes further than the ProV1.

I cannot say I have switched exclusively to the AVX, but I do love the ball ! I have been using the bright yellow AVX through the fall season as I find it really stands out as it flies down the fairway with the clouds in the background sky. Also easy to spot on the fairways and greens. Alas - nothing shows itself when it plugs in the soft mucky areas of the course or hides under a leaf :)
I find the AVX to be a great ball with lots of distance and great control, but I am not sure if I will ever completely go away from my ProV1x