The Peerless CSC-X 6.5" are bloody awesome...I would put them up against anything.
They have incredible crispness and drum kicks and bass are incredible,,,midrange is crystal clear. They match very well with the Vifas...I have no issues..
Crossover wise,,i dont have both amps yet,,,so its still a mono amp setup...when i get both, I may just use the crossovers in the amps, or build my own,,,I am reading up on crossover design...
The Vifas I have,,XT25 have incredible dispersion,,,the 1" sound a bit compressed in comparison,,,off axis response isnt as good. But the XT;s are huge,,there is an intermediate model the DX25TG05-04...