Thanks to all for your input. I am using an SVS SB-12 NSD sub and It actually sounds great with the MMGs. Maybe the switch to either of the speakers in question would be counter productive. I've had the MMGs since 2009 and aside from the wife's disdain I really enjoy them. Would the switch to either of these monitors be an appreciable upgrade? Guess I would need to listen to all of them in my home and decide which sounds best.