Aerial CC3/LR3/SR3 vs. Alantic tech vs Triad vs ?

I'm considering the Aerial CC3/LR3/SR3 speakers for 5.1 theater use only. For those familiar, how would they compare them with Atlantic technology (older 370/450THX), highend Triad, and other manufacturers? I'm especially interested in upper midrange and treble harshness comments.