Thanks for the advice guys,

I saw the bushing comp from Wilson, and believe that to be the best of the bunch, as far as being made from quality material and have the vertical faces of the chambers as mentioned.

http://shopwilsoncombat.com/Multi-Comp-Bushing-Compensator-Full-Size-Blue/productinfo/397/

I'll also be checking the stress points as mentioned, and I have bought the Wilson Combat Shok Buffs too. I didn't have them installed for the shooting session with the video, as I wanted to see if the gun functioned properly, but plan to use them for range sessions only, to help reduce wear.

Thanks again for the insightful advice.