I prefer the older Parker's or Ithaca's, as I find I shoot best with about 3" of drop at the heel. The four guns that I use most for clay's are a 10 ga., Grade 2 Hammer Parker choked Mod/Mod, a 12 ga., Parker DH choked Mod/Full, a 16 ga., Parker DH choked IC/Mod ( although I recently purchased a 16 ga. Parker GH choked Skeet/IC that I plan on breaking in soon), and finally a 20 ga., Grade 4 Ithaca Flues.
By the way, If you plan on attending the Rock Mountain event and want two weekends of shooting, Steve Cobb is hosting his annual event at Hausmann's Hidden Hollow the following weekend. Bring plenty of ammo for that one, as it's a flat fee, all you can shoot event.