I inherited my mother's dehydrator. I think it was never used, but look pretty light and cheap. It's a Ronco and uses a 100 watt bulb for heat. I just want to play around with some jerky and maybe do some fruit so I don't need a heavy duty (read expensive) model. I also have been told that there are some decent dehydrators at Wal-Mart for less than $50. Any comments on these and the Ronco?