In all metal:
Sig 220 (very nice, expensive, single stack magazine, 8 shots)
CZ97B (if the CZ75 was any indication this will be a sweetheart also holds 10 rounds)
Ruger P Series (its bug, ugly and has the ergonomics of a brick in my hand, but it WORKS, its sturdy and has a durable finish, 8 shot mags )
Colt Double Eagle (these don't fit everyone and have a slightly higher barrel axis than a 1911, but it still feels like a 1911 in the hand, 8 shots, discontinued so it may be hard to find)
S&W DA 45's (I don't care for the feel on these big guns, but a used police trade in might be a good bargain)
In Polymer:
HK USP (another big gun, but very reliable, but also expensive and although its a high cap.. magazines are expensive)
Glock 21 (even though its not truly a DA/SA, expensive mags , holds 13 rds and feels twice the size of a model 17 in my hand)