Received the V2 for Christmas and have about 20 rounds tracked with it. The accuracy has been almost identical to my laser, and I don't bother pulling the laser out anymore when playing with the V2. I'm not good enough to notice 1-2 yard differences in any case.
It doesn't miss many shots, but nearly every round when I review shots it will randomly insert driver for my club selection on a par-3 when I used a 7 or 8 iron.
There have also been issues losing contact with satellites in the middle of the round. Most of my rounds are in the front range in Colorado, and I think most of these issues are attributable to the mountains. I played in Seattle in March and had no issues. It's an easy fix when it happens, exit the round and then reenter, but it may be something to consider if you live near mountains. I played in a scramble yesterday and only used the GPS feature and didn't lose signal once, so this issue may have been addressed with the recent firmware update.
The putting tracking seems accurate. It says I leave a lot of putts short, and I know that's accurate.There is a lot of value in the short game usage stats, especially when thinking about club selection and up and down percentages.
Overall I've been happy with the device and it's interesting to look at the round after the fact. I think I need to do more work digging into the results to find areas to improve.