I'm just going to put in a word for paying a lot of attention to weight if you're going to be carrying it...
Check the exact models you're looking at but I think they run something like this ballpark unloaded:
FN - 22 oz.
M&P - 26 oz.
CZ - 35 oz.
The CZ75 is great but I wouldn't want to lug one around much... Unless you could find a SP01 Phantom Polymer which runs around 28 oz... That would help, but I think they're kinda rare: (click)
http://czcustom.com/01158czsp01phantom.aspx
There's also the P07 Duty which runs somewhere around 27 oz.:
http://www.budsgunshop.com/catalog/p...ducts_id/58053