What I like about them...
XDm45: good price, high cap mag, has gotten good reviews, great looks.
Sig p220 elite or equinox: its a sig , beaver tail, great build quality and out of the box accuracy. I dislike the lower mag capacity.
H&K HK45: great looks, very durable, similar to Mk 23
I think the CZ is at the bottom of my list along with the M&P 45.