I bi-amped SL3's for several years using a BAT VK-60 on the panels and a Krell KAV-300i on the woofers and the result was pretty magical. It was much better than using either the Krell or the BAT alone. I agree with sfischer that being able to adjust relative levels is important. I was able to do so because the Krell has it's own preamp. I am exclusively a 2 channel guy so I don't have any HT considerations to balance, but I would opt for fewer channels and better amps.
Bi-amping MartinLogan SL3's?
I'm ready to upgrade to a seperate amp for my ML SL3's (currently using Yamaha DSP-A1 for both music and movies). Options: Get a nice 5-channel to handle both movies and critical 2 channel listening. Or, get a less expensive 6-channel and bi-amp the front three speakers and let the Yamaha power the surrounds. Or, get a nice 2-channel for the ML's only. Or....etc, etc. Does bi-amping make a significant difference? Any suggestions Logan lovers?