We have tested many units and we rank the filter pro #1 among dehydrators in its class. The L'equip Filter Pro has several great additions to the standard L'equip Dehydrator including digital timer (you can set to turn off up to 24 hours prior), digital temerature control (more precise temerature), deep trays (this means that you can dehydrate foods that are more thick than 1" and this unit includes yogurt cups. These are great additions but we were most impressed by the fact that this is the first and only unit to filter the air used to dehydrate you food (this means cleaner healthier food), and the great air flow (even drying). We also love the shape (this dehydrator saves a lot of space), we also love the traditional size of fruit leather trays.