Same here, I've actually bid on a few older 5 channel Soundstreams in the last month or so. I'm too cheap though I guess :-)
I suggest you look for an older Sounstream amp, great crossover network and severly underrated power output. Be prepaired to pay though, anyone old enough to know is also looking for quality equipment in the sea of crap.
If your lookin for new high end and have some dough, check out the Clif Design amps being blown out over at Overstock.com, theres one multichannel amp I think along with a few monoblocks (one of those monoblocks would drive the hell outta that L7 of yours)