I would get the 700 long range, they make it in a stainless version that you can get on sale at sportsman's for $699, and $400 saved over a sendero goes a long ways. I have done load development for 2 different stainless 700 long ranges, both shot very good. One is shooting 180 bergers @2990 into .5 MOA, the other is shooting 168 Bergers @ 3035 into .3 MOA.
On both, I bedded them and properly torqued the action screws before shooting them, and that's it. They have both shot great, and way cheaper than the Sendero. You just don't have barrel flutes.