Either will work fine. I prefer the 7mm mag. I hunt deer, elk and moose with it. I like the flat trajectory for my area and it will chuck a 175 gr bullet into the bigger game just fine. I am not one that thinks a 200 grain bullet is required for non danergous game, plus my shoulder can't take the pounding anymore, so the 7mm mag is the right gun for me. I have taken a number of moose and elk with 140 gr 270, so i really don't see the need to go big just for the occasional elk or moose hunt. If it's your bread and butter, fine but it sound like deer and bear are and the 7 will do all you ask it to and then some. It is really up to you.

If you care the price of ammo is the cheapest for the 7 of all mags.