I've tried out Pitbull (pre-rock) and ag_UnitFrames, but I've not been able to get either to do what I want. I would like to be able to make the health/energy bars vertical rather than horizontal. Is this possible in either or in another Ace unit frames mod?
I don't know of any actual unit frame mod that allows vertical bars. Grid does, but it's really meant for raids specifically, so I'm not sure if you'd like using it for all of your unit frame needs. While not specifically a unit frame mod either, GHud provide vertical bars for the player and their party. It might be worth looking into.