I like JimInTheBurg's idea. Get the Glock and then a .357 barrel for it. I have a Glock 20 and like it very much. Just for the heck of it one day I ran a full box of .40 cal thru it (with the 10mm barrel) and it fed just fine from the 10mm magazines so I expect the same results for you with the .357 cartridge.

I would go with the 10mm first if that is the only choice, but I honestly think the Jim has it right.