? Good question. One I've been pondering for a few months myself (not that I could even actually afford one though). I like the RIMS, keggles, hard plumbing, computerization and tri clamps on the BM but don't like the two tier and no whirlpool option. I like the ability to whirlpool and the choice to go with 30 gallon kettles as well as numerous other options with the B3 but not big into HERMS and the squat kettles for the smaller sizes. Haven't really looked into electric. So I geuss if I had the coin (and the space) for a nice system I'd probably go custom.