I think I'll just stick with my trusty, very old, S-950. It has served me quite well since I've owned it, helped me produce sufficient income to support my family as an entertainer, and while I could easily afford a new Genus, I know what's in store for me in the very near future. If I'm very fortunate, I will live to see my 58th wedding anniversary, and if I make it till October, I will have reached my 80th birthday. Don't think I'll make it much beyond that, though. The pulmonary fibrosis is taking its toll.
The only reason, IMO, to update, is a huge increase in sound quality. That's why I updated from the PSR-3000 to the S-950 - there was a huge improvement in the way the styles and voices sounded. At the time, I still had sufficient lung capacity to belt out some quality vocals, that were enhanced by the newer sounding styles on the S-950. My audiences also noticed the difference as well.
Good luck on whatever you decide upon,
Gary