Arcam or Marantz?

I can purchase a new Arcam AVR300 or second-hand Marantz SR-9300 receiver for about the same money. Does anyone have any views on the particular merits of these two units, particularly for two-channel music? I would be particularly interested in comments on each receiver's preamp sections, and on the quality of the internal amps.

Surround sound/home theater is less important to me, but still a consideration, so any opinions on the receivers' capabilities in this area would also be interesting. Thanks.