the constraints tend to be cost and size.
if you don't have any constraints, notnyt, bosso, warpdrv, and ricci have some good builds, but that is kind of the deep end of the pool. :-)
if you have some cost and size restraints, kick them in and it will be easier to guide you into a solution.
edit: sometimes i have too many browsers open. for $700, get four dvc drivers or hf390's and an ep4000 amp. build sealed and fire them up. yeah, a little over budget, but who cares about deficits? :-)
one of the new mach 5 pi18's and an amp could work too.