If extreme accuracy is a concern, and you're not too worried about being thrifty, and you could live with a short action round,give Kelbly's a call and $2650, and they'll build you a Panda-actioned rifle in the caliber of your choice that will walk all over anthing listed previously. If you absolutlyneed a long action ormagazine rifle, have that action changed to aKodiak orGrizzley II, and it'll still stompon most other rifles accuracy wise.
http://www.kelbly.com/main.html