If the reason you are thinking of a Note is the battery life, go for the Note 2. I'm predicting that the Note 3 won't have a significantly better battery life than the Note 2 the same way the Note 2's is significantly better than the Note 1. It could be a slight improvement, or it could be that the Note 2's will always have the longest battery life. I just think that since the SIII and iPhone5 phones we won't see any more significant boosts in battery life like that and that ~6 hrs for phones and ~8 hrs for phablets (screen-on time) is where it'll settle.
If the reason you are thinking of the Note is the screen, wait. A Note 3 released from now on, since it is a flagship device, will almost certainly have a 1080P screen, maybe even non-Pentile.