I would lean more towards the Dead Air Sandman Ti or Thunderbeast Ultra 9 DT, for direct-thread cans for precision rifles so you have minimal POI shift.
And for QD style cans, the Dead Air Sandman-L, or the Thunderbeast Ultra 9CB.
I've used a Gemtech Tracker once , sound was great but it came loose after a few rounds regardless of how tight it was installed. I would recommend something with a thread over muzzle brake mount.
I just got my tracker at the beginning of July and have been running it on my Cooper 6.5-284 and Ridgline 6.5 creedmoor. It's the first Suppressor I've ever been around so my $.02 aint worth much but Im impressed. Slight POI change but accuracy hasn't been affected. Shoots the same to 700 yards. Love hearing ringing steel without earmuffs on!