I asked that question for a Carbine. I was told the Colt, Noveske or LWRC. I think Daniel Defense fits there, also.
I ended up getting a Noveske Thunder Ranch Carbine. I put an Aimpoint T1 on it with a Vickers 2 point adjustable sling. I sighted the Aimpoint and flip up sights at 50 yards. I haven't looked back. It's a great shooter. I trust it.
For competition or a long range gun, then that's another ball of wax. JP is probably what I'd do for a match grade rifle.