.357 Mag if you don't mind the rather large grips required for it to be used in a semi-auto. Than again, any 10mm will have a rather large grip also.
But your .357 stockpile can also be used to feed a variety of other firearms, including many classic revolvers and lever guns.
very true and I love my 357 magnums (one of my primary rounds) but there are 10mm revolvers and carbines as well.
The 357 magnum and the 10mm are both great rounds. I think that any one that argues one is better than the other is just voting for there tastes.