I currently have the Arcam AVR300 and when visiting a local Arcam and Rotel dealer, was offered to "upgrade" to a Rotel RSP1066 / RMB1075 Amp combo for almost no money. The combo would be new and my Arcam is only a few months old. I have been told that it is better to separate the processing and amplification so I wonder if this is worth it. Also, I know that Rotel and Arcam are very similar with regard to the musical quality, although I watch more movies than listen to music (60% movies / 40% music). I also have been told that the Rotel combo is more powerful and can drive my B&W speakers better. This, I am somewhat skeptical on as both seem that they would be just about the same in driving my speakers.

Bottom line: Is there a quality difference and if so, is it worth changing? Any thoughts?

Thanks in advance for the comments.