I have a 7 years old PSR-3000. I love it, but I think its about time to upgrade it.

I'm playing just for myself so I don't need anything too expensive (like a Tyros [I wish I could afford one]) but I do enjoy audio quality.

The PSR-S950 is about a year old now, features so many new and exciting functions from the latest Yamaha models, and probably no new PSR TOTL keyboard will be presented in the next 2-3 years, right? So I shouldn't wait for the next model of the PSR series, should I?

I would like to hear you thoughts, specially if you have upgraded from a 3K.
Answers like "there is not that big difference, so don't buy one" are totally accepted as well

Thanks!