I was seriously listening to the M20 and the F30 at a dealer (who no longer carries the line)
At the time (pre Revel buyout and move) the M20's soundedabout the same as the F30's but the bass in the F30's was exaggerated. Sort of your choice betwen the actual sound M20 vs the "modern" sound (lostsa bass and more bass, with some extra bass for good measure)
Remember the company is no longer the same company as when it was in New England.
I use Maggies myself.
Good luck
IF I where you I would not upgrade.
At the time (pre Revel buyout and move) the M20's soundedabout the same as the F30's but the bass in the F30's was exaggerated. Sort of your choice betwen the actual sound M20 vs the "modern" sound (lostsa bass and more bass, with some extra bass for good measure)
Remember the company is no longer the same company as when it was in New England.
I use Maggies myself.
Good luck
IF I where you I would not upgrade.