I've given my choice if money WEREN'T an issue... But since it is, I'll give my preference on a practical basis. 7mm Rem. Mag, though a powder hog, is an amazing extreme range performer. While my 6mm Rem is my go-to up to 1000M, my 7mm Mag is outstanding upwards of 1500M+. I HAVE placed successful (and repeatable) hits out to an even mile with the Sendero in 7mm Mag.
"Why is is called Common Sense when it seems so few actually possess it?"
Guns only have two enemies: Rust and Politicians.