Donny, Fran and I just finished a comparison between the Mackie 350s and the eonG2s ....
Side by side - flat response, the jbls sounded like they had a sock over the horn. The Mackie has a clear, smooth high end response and a nice, tight bass. Not boomy at all.

Donny is getting a pair of the Mackies and my Roland Sub. This gives him 3 great performance options with minimal change to his setup.

#1 - just the kb speakers with the sub for some low end ooomph. (house parties, cocktail hours)
#2 - PSR3k into the 2 Mackies - nice and simple! ( small to moderate parties )
#3 - Same as above but add the sub for larger dances that need that bass to fill the floor!

If I didn't have the Bose - this would be my new setup.