I have tried just about every premium single pin sight in the last 4-5 years. Even that so not worth it Trijicon mess (*and trij makes great gun related items).
Between your two selection , both are a solid option. The MBG pins are as is a little brighter. The MBG slider is a little more clunky and not quite as refined IMO as the Carbon Pro. I never liked the tension of the slider and the housing was think, and kind of bulky-more bulky that I like.
I had the regular HD Accutouch and I noticed a bit of noise (buzz) on 2 out of 3 last year. That drove me insane. So I went back to the Hogg Father (solid but HEAVY) and the CBE Tek hybrid pro (great sight, metal sight tapes, lighter).
However setting up my Obsession M7 last night I put my new Carbon pro on. Sight is fairly light, and NO BUZZ. the features I like and it may look intense, but it's easy and adjustable while remaining a typical solid offering from Axcel.
I'll post up a few pics of the CBE and the carbon pro here in a few mins…