Hmmm, $6K, why only three ?? I would go for the "Must" have, which you will probably end anyway, but would not go for highest price,...
- $1200 : a 1911, I suggest the SR1911 (all 1911 should be .45acp), it will do the same as any $2000+ 1911...
- $1200 : CZ Shadow (9mm)
- $1000 : Beretta 92fs (9mm)
- $800 : Uberti conversion "Man with no name", .38 Revolver, NICE piece to have

- $750 : Ruger Mark III bull barrell, .22, all black, nice to introduce anyone and cheap ammoo
- $1000 : Glock 17 or 19 (9mm) if you want a polymere gun
- $1000 : S&W 686p (7 rounds) revolver, .357 magnum