I have a Christensen Ridgeline and have been very impressed with it so far. The action is a 700 footprint, fluted bolt with m16 style extractor. The bolt runs very smooth. I only have about 70 rounds through it so far, but accuracy has been 1/2 to 3/4 moa with factory ammo just breaking in the barrel. The carbon barrel seems to be very consistent from cold to hot, with no noticeable stringing. I believe they use the same barrel on all their builds, and possibly the same action, but I'm not 100% sure. Overall, I've been so impressed with the rifle that I would definitely consider an ELR or BA Tactical. I'm not a huge fan of the stock the Ridgeline is in, but for a lightweight hunting rifle, which is what I bought it for, it works well. I haven't shouldered one of their tactical stocks, so can't comment on them. I was a little skeptical at first, since there are a lot of opinions out there on Christensen, carbon barrels, Christensen vs Proof, etc, but I decided to take the plunge and am really impressed with the rifle so far.