Oh, you are SO wrong about that.

Listen to the drum dounds for starters, then look at the USB connections and Smart Media cards, the dual sequencers on Korg PA series, the ability to "morph" styles on Rolands VA series. The MP3 playback on the Gem Genesis and Korg PA1x! ( and CDRs too ! )

The SD1 and the Tyros/3k let you mix a style in real time with a sequence, and the Yamaha even lets you add the whole arranger to a sequence while it's playing !
( not that it's a good thing, but cool anyway )

There are MANY, MANY added features and improvements made since the psr8000, and they are very easy to appreciate. You gotta play them all to see what's new. That's why I change so often .... BECAUSE of the new stuff. If nothing was added, I wouldn't need the new gear.

Take a closer look and really listen too. There's LOTS of brand new features and sounds to love.