Just get a great 2 channel amp and runit from pre-outs if reciever has them and use its internal amp for center and surrounds to save money then see if you still feel the need to upgrade, there are even 3 channel amps so center will be optimized, surrounds can be driven by your reciever with no problem. On a final note I use a Rotel for center and surrounds and it works great (I run Aragon for mains)
Which multichannel amp to buy
I recently upgraded my HT fronts to paradigm sig 4's and c3. Now i want to get a more powerful amp to better drive these speakers. Currently i run the anthem avm30/pva 7 combo in a 5.1 system. I am considering the following amps: NAD M25, Parasound A51 or 5250, Cary cinema5 or sunfire TGA 5400. Any opinions? I am trying to keep the cost around 3 grand.