I've recently gotten the go-ahead from corporate (aka my wife) to start looking at some new equipment. The two models that I'm the most interested in on the Yoder YS640 and the Yoder YS1500. I'd like to go with the 1500 but I think it's a little too rich for my blood. Does anyone have a used unit that they'd be willing to part with? I'm open to hearing whatever you've got!