Actually Bernie...most time with such a vigorous yearly gig schedule like mine I have to turn around a new keyboard and have it gig ready in one or two days...that alone was exhausting but it did give me a super educational workout learning each of the KB's OS in's & out's.....the money was secondary as they are only business investments that create profits beyond their costs gig after gig so that's not a factor. It also made me realize that with such minor upgraded features most times it wasn't worth the effort to change especially with Yamaha units..eg: Psr, Tyros series units etc.,year after year. I'm NOT a Pack-rat, I don't like to keep gear just laying around doing nothing either, if I don't use it, it's gone. Things will change agin soon i predict....
take care !