Bersa .45, just a bit under $300 if you shop around
Taurus PT145 Millenium PRO, just a bit above $300
EAA Witness compact, also just a bit above $300
All of these would work.
For me, I like the Taurus best but the jury is still out on the improvements from the original Millenium pistols. The Taurus has more to offer. 10 rounds, DAO, compact, good sights and lifetime warranty (might need that)
Oh yea, the Ruger is a contender too if you want a big .45
I look at weapons in .45 that would fit my CCW needs. Can you tell?