I prefer PS3
PS3-You can rip audio CDs to muliple codecs/bitrates, using track listing data from an online database
360-You are limited to WMA, a preset bitrate, using a local database that wastes space on the harddrive
PS3-You can edit metadata including the thumbnail
PS3-animated thumbnails for video
PS3-better divx/xvid support according to the dvix corporation themselves
PS3-RemotePlay
PS3-You can copy MP3s (or movies, photos) straight off a USB/flash drive/CD/DVD/etc and even to USB/flash drives
360-You must rip an audio CD. You cannot copy videos/photos to or from the system
PS3-The XMB is far more organized/user friendly than the NXE
PS3-Pressing X on a movie/photo/music file plays the file, pressing triangle brings up a context menu
360-Pressing A on a movie/photo/music file brings up a context menu
PS3-The on screen remote has every option a real remote does
360-The on screen remote has like 10 features, and you cant even fast forward music
PS3-Lets you plug in any 2.5 inch sata harddrive
360-Lets you buy any 360 harddrive for many times the cost/gigabyte than regular drives
PS3-File delete/copy/move multiple options letting you select individual files from a list
360-You can delete files one by one, or everything on the drive
PS3-HQV DVD benchmarking score: 120/130
360-HQV DVD benchmarking score: 20/130
http://www.extremetech.com/article2/0,1697,2088533,00.asp
http://www.hometheaterblog.com/hometheater/2007/01/review-sony-playstation-3-bd-playback/
PS3-Bluray player keeps getting upgraded
360-The HDDVD player didnt even support online functionality, and is dead.