If you have listened to the Pioneer and they sounded very good, then a few more hundred dollars probably won't improve anything. I've recommended the Pioneer to a few people. Some agreed that the Pioneer sounded very good. Some said the Pioneer sucked.

It surprised me when they said that, but not everyone thinks the Pioneer sound good. Go to Fry's and listen to the P363 and see for yourself. Don't just take people's word for it. Compare for yourself. Never know until you try.

My opinion is to get the less expensive of the two.