I personally really enjoy the 24 team leagues especially with the new playoff formats. Love to see almost all the players being used and also the different team strategies. Gotta use a cheaper cap in the 20xx leagues though so someone isn't completely ruined by a bad draft.
I joined an ATG VI league that was forming...24 team, no-DH, named Plains. Five teams in, a couple other friends ready to join...come give me a shellacking since I suck at ATG.