Well it's pretty much come down to these 2 for the power to the Mcubes. Can anyone help me decide which way to go? I've demo'd the Mcubes with the RXV457 and it was quite impressive, however, by all accounts the Denon is a better amp. I'm looking for the best mix between movies and music. Yamaha I can get for about £220 Denon about £320. Am I splitting hairs here or is there a big difference?