I have experience with the MTR’s. I currently own 3 of them. I have a 25 Creedmoor, a 6 ARC, a 6.5 PRC and a Conviction 223. I love the ergonomics of the stocks. But I also understand each person has their own likes & dislikes. I also have an Elevation in 6.5 Creedmoor. It’s also a very comfortable and accurate rifle, but I do prefer the MTR stock.
The rifles are all amazingly accurate. Most loads are sub MOA, but the loads the rifles like are way sub MOA.
Have you got behind either one? I’d want to feel them myself. $2600 for an Elevation is a smoking price. If you liked how it felt, it would be a heck of a nice rig!
Also, Area419 makes a full length arca rail for the bottom of the stock if you want something like that. You have to get the rail from Proof, but they are available.