[Oversway]

Give any arch devil regen, quickness, and decent prot via items. Probably +mr and reinvig as well. Script fireshield and attack (anything else?). They have great stats, high hp, fire immunity.

Edit: the above is with cb mods in mind...otherwise definitely want lifedrain.

For summons I agree with thejeff, it all depends on what gems you have. Summer lions I sometimes summon since its them or firesnakes, but I don't know that I'd pick fall bears over statues, mech. men, or heck maybe even crushers.