Experience w/ Legacy Audio Speakers Focus 20/20

I've read some posts here and @ the asylum regarding Legacy Audio. I have a pair @ home for a demo and I'm very impressed with what I've heard so far; but I wanted to see if anyone has long term experience with them... in particular, the Focus 20/20.

I'm driving them w/ a CJ Premier 11A and, due to their incredible efficiency (96dB), it does a nice job. I'm curious if anyone has any suggestions regarding horizontally bi-amping with a Premier 11 driving the high/mids and (*insert amp here*) driving the lows. Any input is greatly appreciated.

Hat