I had the same wants, and went with a Remington 700 CDL SF in 7mm Rem Mag. This was last year, and I had a bison hunt upcoming with a buddy who had the draw here in BC. 7RM is the minimum criteria for a cartridge to shoot bison with, as laid out in the letter that comes when you win the limited entry draw. IMO that makes truly the minimum for hunting ANY North American big game (and I'd think twice about hunting Grizzly with it).
The ups: I absolutely love the 7RM as a hunting cartridge, and am really happy with my 700. I took a doe last year (my first deer) at 230 yards with it, and a week later a buck at 446 yards (408m on my GPS). This year I shot a muley doe at 286, my best shot yet (double lunged with 160 gr. Nosler Accubond, she travelled less than 20 yards). The gun is an absolute laser, especially paired with my Zeiss 4.5-14x44. It is so flat it's very forgiving as a long range hunting choice, it doesn't kick bad at all, and it's a ton of fun to take to the range.
The downs: I find that the stainless fluted barrel on my CDL SF changes zero as it warms up, to the point where your 3rd shot will almost always be a flyer, making it not perfect as a range gun (and not cheap to feed factory ammo either). Long-range (by this I mean 250+ yards) hunting is a topic of much discussion - you need to
practice a lot. I also highly recommend spending $$$ on a good range finder. The buck I took at 400+ yards travelled over 300 yards shot through the backstrap after I miss-estimated the distance (all my buddies give me a hard time about not liking the taste of tenderloin) down into a gully and over a creek before powering out on the uphill climb. When I was tracking it my stomach was doing flip-flops thinking I'd lost the second deer I'd ever shot at. Shooting an animal at that range is not a descision I'll ever make lightly (and I'll likely just plain not do it again, but flame on anyway guys, you know you wanna).
Hope this helps. Good luck with your purchase!
7m7