Hi,
I just ordered a pair of Sierra Towers with RAAL tweeter to upgrade from my Sierra-1 NrT tweeter speakers. I have not received the Sierra Towers yet, but I hope that I've made a right choice (spending so much saliva to convince my beautiful wife since it is a quite expensive item). Anyway, I plan to use these towers as L & R speakers and Sierra-1 NrT tweeter as center. I am looking for suggestion of an amplifier to bring out the best of these towers. My listening habit is 50% music (jaz, soft rock...) and 50% movie (action and some comedy).

My system:
Receiver: Anthem MRX500
Amplifier: Adcom GFA-7500
BluRay player: Oppo 93
L&R Speaker: Sierra Towers with RAAL tweeter
Center: Sierra-1 NrT bookshelf
Surround: Emotiva ERD-1 speakers
Subwoofer: Rythmik 12 in Signature Edition Servo

Question: do I get additional benefits if I upgrade my amplifier? I am thinking of Anthem MCA50 or McIntosch MC7205?

Thank you very much in advance.