It looks like I'll be using a pair of C8R 8" mids. I can't say they are the best overall mids, even though they are my favorite. They just have some kind of synergy happening with the betas that just works really well for me. The beta's will most likely be run full range as, alittle bit of the grind is lost without those high frequencies coming through them. I have found that no matter what the frequency response of a driver is, the size of each one determines some of it's character. 6" mids sound good but almost alittle "hard" or can have a certain "gank" to them unless their response is scooped to begin with, like the faital pro used in the baer cabs. 8's sound rounder with less gank with the same type of frequency response. 10's sound even rounder but can end up sounding too soft when used as a mid, or worse yet, have a clank to them. I've spent a pile of money trying different drivers and for me, 8" drivers tend to sit between a pa style mid and a guitar speaker. They get alittle bit of each's sound which is where the sweet spot is for me. Except for some old peavey's, I've never heard an 8" that I totally hated. I've really disliked most 6" and found many 10's to sound either too dull, too harsh or too washed out in the top end to be just right on their own. Some pretty subjective terms being thrown around here, I know. I feel that by going with 8's, I'll shave alittle size off this cab, have a sound that I know works well everywhere and be able to experiment with other 8's later if I get bored. If I wanted to go from the guitar speaker sound to a more mainstream 2-way bass sound, I could pop in a pair of faital 8fe200 drivers and be done. Thanks for following and your input guys. When the cab is finally built, I will post my review and pics in this thread to keep all of this information and opinions together.