I own both and will say I'm glad I don't have to make your decision.
The ExpII wears slightly larger but sits lower on the wrist and can say that for me, the ExpII is a bit more comfortable. I do like the shine of the SubC bezel but there are times I feel like toning it down a bit. Glidelock is second to none on the SubC.
Hard to explain but the ExpII just screams to be worn.
I say give it a try. The ExpII will not disappoint.