Hi, I'm thinking of upgrading, I have a Onkyo THX 898 7.1 Recievr with M&k K series speakers, which the onkyo drives very well. Thinking of getting a power amp first, would the Rotel 1075 be and upgrade? the M&K speakers require some jucie to sound good IMHO. or would I need to be looking at least the Rotel 1095 or the Parasound halo? Alternativley 3 x Musical fidelity XAS-100 in Mono-Block mode for LCR and I XAS-100 in Dual Mono mode for the rears? with this combination be better than the parasound halo?