My understanding of PSR-8000 sampling is that it imports and exports .wav files only. The .wave files can be looped and otherwise edited inside the PSR-8000. But they cannot be exported. I have not found a way to edit samples externally or use pre-edited or pre-looped samples on the PSR-8000. SCSI should make this possible eventually on the PSR-9000. The PSR-9000 has 32MB ROM versus 12MB in the PSR-8000 and the PSR-740. Most opinions indicate the extra 20MB provide good new sounds, especially the new "Live" sounds. One advantage of the PSR-8000 over the PSR-740 that few people mention is the availability of aftertouch, which is the "handiest" real-time controller useful for string and wind instruments.

The HD is definitely faster than the floppy on the PSR-8000. If you care about styles, however, the PSR-8000 does not appear to store styles on its harddisk. The PSR-9000 should improve upon this as well. For functionality, the PSR-9000 is the winner. However, for what its worth, I think the looks of the PSR-8000 are the best of any PSR keyboard.