If music is really important to you then I would definitely recommend the Arcam. I have the AVR300 and love it (using it with Nola speakers). I prefer it with an aftermarket power cord, which doesn't have to be an expensive noe BTW.
I've had a couple B&K amps and listened to their receivers. B&K do make a very nice product.
But for me, the transparency, body, dynamics and overall sophistication of the Arcams are great not just for movies but also for music - and much closer to the sonics I'm used to with my high end audio system. I don't want to give those virtues up in my second/HT system. I want it all, sound quality and convenience, and that's why I'm a big fan of the Arcam receivers.