ok, first, I'd say a basic 1911 is worth a look, big surprise there eh?? Something like a mil spec Springfield, a Colt 1991A1 or for a bit over the 600 hundred you mentioned, a Kimber Custom. If you'd decide to go with something other than a 1911 style pistol, and stay under the 600.00 dollar mark, then I'd look at Glock Model 21, or possibly a Model 30. If you'd consider a .40 as well as a .45, your choices would widen considerably, but sticking to .45 acp, a basic 1911 or a Glock Model 21 or 30 would be my suggestions. Good luck with whatever you decide on.
mavrick
mavrick