I have a mid size Excalibur dehydrator. It has 5, 15 x 15 inch trays, many labeled settings for temps, and works well. Drying times of course varies , according to the moisture, subject thickness and heat setting that is appropriate for the food item. Be sure and order silicon sheets for wet items, like fruit leathers. This one has been in regular/ extensive use for about 6 years. It is plastic, but works great and holds more than my last pretty, stainless steel one. It cost a bit more as well, but has lasted longer and is larger inside, works great for making yogurt and proofing dough, in cold weather, for bread making. Quart canning jars easily stand inside for making yogurt.