The cheapest way out with a new barrel for you is just to snag a 16" ER Shaw barrel from Model 1. I've got one that shoots well under 1".
I'd stick with the HBAR...I have a pencil barreled upper that is silly light, but those little barrels heat up quick, and I've heard stories of some POI shift once they get hot. A gov't. profile might be an option to save weight, or you could just have Model 1 flute the HBAR for another $50...you'd still be under $200.
The Bushy isn't too bad price wise, and iirc, all of their barrels are chrome lined?
As far as I know, only RRA has the Wylde chamber, so if you really want one, you might be stuck with an RRA barrel.
Or, send your current beast out to get whacked and fluted. I just sent my 24" DPMS .308 bull barrel out to get cut to 20" and fluted...we're looking at a 3 to 4 lb. weight saving on that bad boy.
You could get almost as much out of that yourself with your barrel. When all is said and done, the whole deal with shipping both ways will be around $100.