I've only used a real food dehydrator once, to make trail fruits for a backpacking trip in high school. The one I got is pretty similar - round trays stacked over a heat source and fan - and works pretty great. I dried a bag of the frozen tart cherries and a bunch of the new sweet ones. The tart cherries dried a lot faster, the freeze-thaw process releases a lot of juice, but they are pretty beat up from being hand-pitted and frozen. I really like their flavor dried, it's very intense. The pitter did a great job on the sweet cherries, leaving only two small holes. That meant they took close to 30 hours to dry down to a reasonable plump-raisin level. They are milder in flavor than the tart cherries, but still nice. I think I might try coating some with dark chocolate. Yum.