Thats the kind information I like to hear. If it really makes a difference than I guess I'll go for the amps. "Popping" huh, thats no good. Why was that happening? Was it running out of power? Thats really good too know. Makes sense that you would want to let the receiver know to tell the front speakers "hey, we got somebody to help you out and ease the load in those low spots".
How big is your room? Do you find 110 to be loud enough for you? If I know my db scale right, that should pretty dang loud, right?


Me playing Hendrix with my teeth: http://www.youtube.com/watch?v=oYaBBemvA7U