The difference I see is Resurgence is made for heavier oil where the Total Nv is made for medium - mediom heavy oil.  I think you will get more use out of the NV because if you play on THS you tend to find a more meduim oil shots vs a heavy oil shot week after week unless you sign up for a sport shot.  Even them on spot the NV might be better.  Plus alot tournaments you really don't need a heavy oil ball all 3 games.  I love the NV I use it everywhere on alot of conditions and score very well with it.  I also use the Nvs which is a Step which can handle more oil.

I agree with explorer, you'll get more use out of a TNV than a Resurgence. I like both of them very much but the problem I have with my Resurgence is if the lanes aren't flooded, the ball is useless. I get lousy carry with the ball on med-light lane conditions.

As far as hook potential, they both hook about the same for me. The difference is the TNV gets about 80% of its hook on the backend, whereas the Resurgence gradually starts to turn as soon as it hits the lane.

I'd like to recommend a couple other balls to take a look at if you've not already. My brother has a Black Widow Pearl & it's a damn good med-heavy oil ball. I actually think it carries a little better than my TNV. Another ball to look at is the Columbia Momentum that's coming out the week after next I think. It's a pearl-polished version of the Resurgence & I'm assuming that it's going to be more of a medium oil ball. The ads I've seen on it say that it was designed for the typical league pattern. I guess I'll find out in a few weeks. But its using the same core as the Resurgence & when my Resurgence is working, I don't believe there's a harder hitting ball out there.