I'm in the market for a daily carry weapon in .45 ACP. Note, this does NOT have to be a compact gun, since I normally open carry. Must have at least 4" barrel.

I'm interested in:

Glock 21
Glock 30
S&W M&P45
Springfield XD45

Or any other gun you have to offer that means the criteria. I'd like to stay under $500 shipped.

Thanks
Dave