Don't know much about the Onkyo but can definetely vouch for the Marantz.
I own the Marantz SR5600 precedesor of the 5001. 2 channel is a good as it gets for it price range, superb quality sound (read my review in audioreview). Yamaha/Denon might be slightly better for HT but they are not reknown for their hifi performance. For all rounder capability without paying silly prices, I would choose the Marantz.
I own the Marantz SR5600 precedesor of the 5001. 2 channel is a good as it gets for it price range, superb quality sound (read my review in audioreview). Yamaha/Denon might be slightly better for HT but they are not reknown for their hifi performance. For all rounder capability without paying silly prices, I would choose the Marantz.