I’ve been to every single Palmetto Regional thus far (when it’s a half-mile away, there’s no excuse), the Championship every year since 2004, the Florida Regional in 2005 and 2006, and the Saturday of the Peachtree Regional in 2006.
Call it bias, but I think Palmetto’s the best of the three regionals I’ve been to. (The Championship is a whole other ballgame.) Florida’s a hard-fought regional, and you can’t get much closer to the field than you do at Peachtree (and I’ve shagged the stray Poof balls to prove it), but Palmetto’s always had the best balance of teams, venue, and atmosphere.

