I used a magnus stock a year or so back. Really comfy, great customer service, and fit my sr3 without issues. I would say the only thing i regretted was the weight. The Magnus has an adjustable LOP and cant on the butt pad. Fit and finish was top notch and its stiff which is important in such a light stock. The cheek piece from factory also wasnt very comfy on its own. It felt "narrow and sharp". Not sure if the price is justified over other brands though.
But for an upcoming build i went with an all terra carbon stock. It has a monte carlo style cheek so its pretty darn comfy (only been testing it at home, gonna get sent to ts customs with my LP 338 fuzion soon). Also its rigid as heck, the palm swell fits my hand well and the grip is textured for rain or other wet conditions. The LOP is fixed to save weight. Mine weighs like 26-27 oz for a long action inletted for standard rem 700 and 2 sling studs in front with medium recoil pad and 13" LOP.
Ill have a better write up once rifle is complete for you brotha