It is pricy, but really nice
I think the PredatAR is the best deal, considering what you get with it.
The third option I listed with a BCM upper would definitely be the cheapest. Minus optics, optic mount, and Geisele trigger I figure my rifle will come in at ~$1,300.00 (spikes standard AR trigger in it).
I don't know much about it, but Stag Arms makes a 3 gun rifle (Model 3G) that might be worth a look. Probably accurate but a little lighter than a heavy barreled rifle. I don't know who they get their SS barrels from, or if they make them in-house. Has a Geissele super 3-gun trigger, sampson handguard, 18" SS barrel with rifle-length gas system, 5.56 NATO chamber, 1/8 twist, Magpul ACS stock and MOE pistol grip, 3-gun compensator. Looks like a pretty nice set up!