For plinking and cheap practice, my Ruger Mk II with iron sights; for cheating, my husband's stainless Mk II, with a bull barrel and a scope! (It's not really even shooting, more like poking holes in the target with a pencil).
For more serious shooting, the EAA Witness Compact in .38SA, Star BM (9 Para) or any of the carry guns below.
Carry: Star BKM (alloy frame!) or PD (also alloy, .45) for everyday. Star BKS with nickled slide, dove-grey anodized frame and walnut grips for
formal events
, or the delightful Star Super S (.380) if concealment is needed. ...The Star S is the least-expensive gun I've yet bought ($125, used and with a crummy magazine) and one of the best-shooting, despite insignificant sights. You boys might find it a bit too delicate, as it's a kind of slenderized "dollhouse edition" 1911, right down to the barrel bushing and recoil spring with a plug end and half-length guide rod. For me, it is the perfect compromise between small enough to conceal and big enough to shoot accurately.
Beater: Ballester-Molina! I think mine was used as a hammer (or maybe a tent peg) by the original owner. If I owned a truck, this would be the "truck gun."
All of those were bought for less than $400, most of them well under.
--Herself