Actually bang for buck i would go 917v instead of 917vs just because is its not going to be any less accurate (all of the guns mentioned have about the same accuray potential), and the price difference gets you a rifle basix trigger. I myself just did the normal home trigger job and my trigger improved significantly.
About the only real difference between all of them is looks. The savage and the marlin are garrenteed to need trigger work (both remedied with home trigger work or a drop in). As i understand it the CZ mayor may not, need trigger work too.
Pick the one you like they are all winners