I have used mono-blocked Pathos Classic 1's for two years now with my Cremora M's and have been very pleased with the results. I had used the Classics with the concertos previously, but the Cremora M's are a big improvement. The mon-blocked Pathi provide plenty of power and certainly don't sound "lifeless" in my system. I've been very happy with the combination.
Sonus Faber Cremona M vs Verity Audio Parsifal
.....I don't know if my original post went through on this - so here I go again : my system is the following ; Classe CA2300 amp, Classe CP 800 pre-amp and the front end is : Esoteric P-5, D-05 and the G03X clock. All cabeling is Purist Audio 20th Anniversary......I have a chance at a pair of used / mint Verity Audio Parsifal Encore's or go with Sonus Faber Cremona M's floorstanders. The room is 13 x 22 .....your thoughts and no need for any other speaker suggestions as these are the two