At this point I've pretty much narrowed it either the Heritage or Legacy in the 166, but I am strongly considering the Arbor in 167. There are little pluses and minuses to each from what I can tell, and really price is only playing a small role at this point because they are all pretty close.
What I don't want is to "outgrow" (meaning with my ability) my next board too quickly. I did that with this one I have, but then again I always planned on it being that way. This next board I hopefully will get quite a few years out of.
Wiresport suggested an Arbor A-Frame in 170 (regular width board) but after my initial research on that I'm concerned that one might be too far beyond my current skill level.
If you want to grow into something over several years I"d say stretch to the Arbor, what the hell. (no familiarity with that specific board).