I have Paradigm Monitors: CC370, 5's for mains, Mini's for side/rear, all v.3's. I CRANK my 5's HARD!!! The sound never got worse with time. They are great (as are the MiniMonitors too), but none of them go to 60HZ good enough to blend with my subs (2 PW2200 v.1's stacked) BTW, 60HZ is my favorite point to reduce localization of the sub. I absolutely hate the CC370. It sucks!
I am soon buying: 3 M60Ti's for the front 3 & either 4 M22Ti's or 4 M2Ti's for surround & 1 SVS PB2-Ultra.
Hope this might help...
