I too have been struggling with this decision as well.
To me, the only improvement I find between these balls is with the driver.
V1X Pro's:
-With the driver they seem to go straighter
-The harder feel is enjoyable for me and it is a confidence booster to hear the deafening sound with the driver, just a mental thing
V1X Con's:
-Driver sends this ball way too high which on a windy day or extremely narrow fairways (like my home course) leads to problems
-Sometimes just feels clunky
-Very undesirable off the tee with irons on par 3's
V1 Pro's:
-Putts much easier
-When I hit it perfectly, the flight of the ball is perfect
-Grabs the green and doesn't let go
V1 Con's:
-Everytime I tee it up I fear I will lose it, I'm not sure if it is mental or if it is because of the spin
For how I strike the ball I am in a catch-22. My swing speed with the driver is very fast, probably too fast for the driver I bought (Cobra Speed LD M). I can knock the ball consistently in the 250-260, with a 280 drive every so often, and a 300+yd one ever other round or so; so to me that dictates I can utilize the hidden advantages of the v1x. But it just flies too high off the tee for me. I really don't need the spin of the v1 -- shaping shots really isn't my thing, and with my PW-8iron, the ball flies so high (I like it like this) and hits the green so hard that it just stays where it is (seriously, I can scan greens at my home course and point out which ball marks are mine because they are like craters on the moon) so the "Stop and Drop Green control" of the v1 really does nothing for me, I just don't like the feel of it.
Sigh.