Nobby,
I don't want your post to have a "0" next to it for long!

Check out this Yamaha site for a side-by-side comparison of the new PSR1000, PSR2000 and PSR9000 keyboards. http://solutionsnetwork.yamaha.com/knowledge/portcomp1.asp
In fact, you can enter almost any Yamaha keyboard into the Comparison Chart.
Tom