Need BCG for my 11.5 SBR. Considering BCM, Spikes, DD and Colt. I know those are quality BCG's. I dont want any fancy coating. Just want phosphate and reliability. I just saw a BCM go on gunbroker for $325. Thats ridiculous. I guess someone had to have the BCM logo pretty badly. Can anyone give me reason why one of these is better than another?