Well folks, as an update, I was able to audition both the Legacy Classic HD and Signature SE speakers, but only in a two channel set-up, as they did not have the surrounds or center channel speaker. In comparison with the MA GX300's, I felt that the Classic HD's did not measure up as well, especially in the upper higher end frequency. Now the Signature SE's compared more favorably, and they did not have the new style Air Motion Tweeter, but still had the previous similar design. I still felt that the MA GX300 was a little more detailed and life-like sounding, especially in the upper frequency range, but the MA's were audioned in another location, with different amplification, etc... I am more confused than ever now. RBH is out of the question, because I cannot audition them, or return them if I do not like them.