I don't see a thing wrong with any of the WSMs. They have a tad more velocity than the standard critters, so you have a bit longer effective range--if you are a good enough rifleman to use it.
For all practical use as a big-game hunting rifle, you'll never burn out a barrel, so that issue is irrelevant. The cost of ammo isn't all that important, given how relatively little "pleasure shooting" is commonly done with a primary hunting rifle.
You're from BATFE? Come right in! I use all your fine products!