Zeagle BCDs are indeed great. Just as good as the ScubaPro, IMO. But here, SP wins because the OP can get local service. Zeagles are also pretty expensive, IMO. Worth it, arguably, but definitely cost more than the KnightHawk.
A bp/w, however, is more rugged than either and comes with a host of other benefits. Local service isn't really an issue since it's bulletproof; the only thing possibly needing service is the wing, and since they use standard inflators pretty much any LDS should be able to do a simple pressure check and service the inflator if needed. It's also cheaper than either the KnightHawk or any (new) Zeagle BC. I recommend chatting with Tobin at Deep Sea Supply before making any final decisions. It's a free phone call for some excellent advice, from someone far more knowledgeable than any of us. May end up with the SP BC anyway, but I honestly believe it's at least worth a phone call.