I'm looking for a Mamiya digital back that takes CF card, is at least 22MP, and is roughly in the $2000 range. I bought an Imacon iXpress a while back but realized that the clunky semi-tethered hard drives are not for me, so I'm looking to sidegrade to a self-contained unit. Something like the Aptus 22 or the Phase One P25 would be ideal, though if you have a good-but-out-of-my-indicated-price-range deal on a higher resolution back I'd be interested as well.