RE: Still trying to decide...
I don't want anybody to take this the wrong way. But I just don't see the reason for the WSM's, the WSSM's, the SAUM's, or the RUM's. There are plenty of cartridges out there that will do everything that these will. So what if a WSM will give you 1 inch less drop at 300 yards. If you know your firearm and cartridge the way you should, you'd compensate for that 1" (which in my mind isn't enough to worry about). And the deer or whatever doesn't really care if it's hit with 500 ft/lbs of energy, or 700 ft/lbs. If you make a bad shot, and shoot a Moose at 400 yards while it's quartering away and hit it in the rear leg, maybe the extra 200 ft/lbs of energy will help, but come on.
I don't begrudge anybody buying all the firearms they want. I think that's great if you can afford it. But I think the manufacturers have gotten into the mind set that "if we build it, they will come".
I'm always open for debate, so if someone can tell me what's so great about a .270 WSM, I'm all ears. And you can compare it to the .270 Winchester if you want, but I'll counter with the 7mm Remington Magnum. And if you counter with the 7mm Remington Ultra Magnum, I'll counter with the 300 Winchester or 338 Winchester Magnums.