Seekins Havac Element hands down here. Researched this for quite a while before making a purchase decision. Done, would do it again, and have put it through range time and two hunting seasons. Indiana Whitetail.
This past season, 3 does 3 rounds 3 tags punched less than... well, less than any number of seconds I'd care to defend. No video and all. Rifle cycles incredibly well.
Went with .308 Win. Will cover most of my hunting.
I was looking for the "forever" rifle which needed to be light, accurate, and in a caliber I load for. Needless to say I do believe I've found it. I researched custom builds, and quite frankly, and for the money, I couldn't beat an out of the box Element from Seekins in terms of weight and functionality for my needs / wants, etc. I do wish the barrel wasn't quite so shiny.
It sports an NF ATACR 4 x 20 - 50 F1 attached with an ERA-TAC one piece mount. OSS (now HUXWRX) QD muzzle brake and an HX-QD Magnum Ti Helix suppressor upon occasion.
This summer I intend to dial in accuracy, just because. To date, I've managed less than 1 MOA @ 100 yds with factory Nosler BT rounds and Federal GMM. All good.
Be very interested in seeing how your research pans out for you and which way you go.
Mine lead me very well away from one of the other two that you are considering. Caveat emptor, I've never owned or used either of them. First time buyer from Seekins, not sponsored, just reporting what I've experienced.
By all means enjoy!
Matt