I think you would be best to move on from the Legacy Focus 20/20's. There is no guarantee that even more power would make them sound better, or get your toes tapping. I was a fan of Legacy speakers in the early years, I owned 3 pairs between 1987-2000. Then I found that there were better sounding speakers out there.
As others have mentioned, ML's can also be difficult to drive. 200/400 wpc should be plenty to drive most speakers out there, you should have plenty to choose from. Look for a nice pair of Vandersteen, Vienna Acoustics, Dynaudio, Sonus Faber, etc., grab a pair, and move on.
As others have mentioned, ML's can also be difficult to drive. 200/400 wpc should be plenty to drive most speakers out there, you should have plenty to choose from. Look for a nice pair of Vandersteen, Vienna Acoustics, Dynaudio, Sonus Faber, etc., grab a pair, and move on.