i just bought a set of the older polk momo's bnib for 140 shipped off of sonicelectronics.com. i was looking for a set in a similar price range and found these after a few months of searching. they have then on ebay for the same price.
they are rated for 150 rms IIRC, they handle more than the new momo's tho. and there over sized 6.5". i haven't installed them yet but they look very beefy and high quality especially compared to my old kappas which cost $130 shipped.
oh and the pioneers previously mentioned were in a very close second for $30 less.