Need some suggestions for a party / raid unit frame addon (Classic)

I’m playing SoD and trying out healing, and I’m looking for an addon that makes the party and raid frames a bit easier to work with than the standard ui version. I don’t need anything super complicated, just something that lets me have larger unit frames to work with, as well as a way to easily track buffs and debuffs.

Some friends have suggested z-perl and shadow unit frames - any other suggestions?

ElvUI or VuhDo