I've had a gen 2 for about six to eight months. Overall I like it but it did/does have a couple little issues. The biggest was barrel leading. The first two or three mags would be fine, it'd shoot where I was aiming. After that, the groups would open way up. Look down the barrel and the last half to third toward the muzzle was leaded up bad. Cleaned it and shot some more, same thing. This time around, it was so leaded I got the bore brush stuck in the bore and had to hammer it out.
I contacted Taurus and they had me send in the barrel and sent a new one out quick. Haven't had a problem with that issue since.
The only other issue I've had was the 22 round magazine not feeding consistently. The follower on the 22 rounders are difference than the followers for the 16 rounders. I've seen reports that the follower is what is causing the issue but I haven't experimented to confirm this theory. I just ordered two more 16 rounders and live with it.