I have an LD Systems 12" Stinger monitor, it moves air and may cost less than the verve, if you're getting on for e300 then maybe not though. The LD has a better overall freq response imho.
The LD System has a coaxial driver? I have been using the old series Mon101 with the Axe Ultra and is suited my needs pretty well. Ok, maybe it hasn't a deep low end but i'll have to try it again.
Anybody tried the DB Flexsys FM12?