Don't forget the Winchester Model 70. They started making them again last year in Columbia, SC and the word is that it is made with all the great qualities of the pre-64 but with improvements.
I own an old Browning A-bolt Stalker in .280 and it has been an awesome gun the last 20 years but I really like the looks and function of the new x-bolt.
The problem you have is that Browning, Winchester and Remington are all putting out some incredible rifles right now and it's a tough choice.
I recently bought a new Winchester Super Grade Model 70 in .270 and a Rem XCR II in 7MM Mag and they are both extremely well designed rifles. For the XCR II, you can buy a really cool camo stock made just for that rifle on ebay right now for around 100 bucks. That's what I did and it looks sweet.
Good luck in your decision but I don't think you can go wrong with any of them.