I used
Balanced Magic for quite a while but the lack of Dragonborn support and a few mechanics I really didn't like put me off it. Now I just use
Empowered Magic, which I haven't really found a single major fault with. I tend to prefer a compact vanilla-style magic overhaul to ones like Apocalypse that add a ton of new stuff just because I'd be wasting scripts on spells I'd never use with the latter. I'm perfectly happy with Skyrim's vanilla magic system for the most part, I just think it needs the serious rebalancing that magic mods often provide to make it viable.