I have a chance to buy a 1997 Zeta Crossover (35" scale) Educator model (bass & treble tone controls only and 9V electronics, whereas later models have midrange tone controls, midi out, and 18V electronics). A web search shows two later models going for ~$800 used, yet this store wants $1000 for the older model. What do you think - is this one too much, or were the other ones unusually smokin' deals? And . . . should I hold out for a newer model on the basis the they have improved a lot since 1997?