You have to compare each individual gun, one against the other. All things being equal, the Sauer sounds best for your purposes. The Browning's weight would be an asset in the duck blind, but a liability in the field. The CZ is a good value for the price point, but a used Sauer would be a better gun for the same price.
Damage, wear, or any kind of abuse leading to corrosion or dents, etc., changes the whole picture. Length of pull, drop at comb, cast, and so on are important. If you can, shoulder the guns and see which fits you best. If you can't, get the measurements off a gun that fits you and compare with those of the prospective guns.
Look at the individual guns and make your decision from there.