Are you wanting new or used? If you have no problem going the used route I'd say a Sig P229 in .40 or .357 sig. The XD series are great guns too...I have 2 XD pistols and one XDM, they are great and carry pretty well when dress permits. My newest carry gun is a Glock 27...not sure how you feel about them but I like that I can conceal this thing in Summer attire. If money permits though my personal preference is Sig.
"They're on our right, they're on our left, they're in front of us, they're behind us; they can't get away from us this time."
Chesty Puller, USMC, Chosin Reservoir, Korean War
"You cannot exaggerate about the Marines. They are convinced to the point of arrogance, that they are the most ferocious fighters on earth - and the amusing thing about it is that they are."
- Father Kevin Keaney, 1st MarDiv Chaplain, Korean War