I've used virtually every dehydrator on the market and even a few home-made versions. Trust me when I say that this dehydrator is the best you can get for the money.

The round tower-type dehydrators are inexpensive for a good reason: they aren't worth it.
-The trays are flimsy and crack too easily.
-The holes on these trays are too big to use with herbs or diced foods, so you must use the mesh inserts.
-You only have about 1/2" of space between trays, so you cannot dry bulky items--like flowers or granola.
-When it comes to fruit leather, the only thing more inefficient than the round shape is the hole in the middle. Yes, I know they come with fruit leather trays, but have you ever tried to store fruit leather pealed off of the tray and rolled up? A shredded mess to begin with and a sticky mess once they've stored for a while.
-With the motor on the bottom any food or juices that fall through the cracks shortens the life of the machine.
-The... Read more

We absolutely love our excalibur dryer - it works so much better than the cheaper, round versions that are out there. However, there are a few things we hadn't considered prior to buying that we wish we had:

*****This model has no timer, thus no auto-off. If I had it to do over again I'd buy the one with the 26 hour timer for sure! We recently started a recipe only to realize it would be done at 4 a.m. - ugh! not a fun time to get up just to shut off the dryer!!

*****There is no on/off switch, just the plug. I don't know if the model with the timer has an on off button or not, but I really hate items that don't offer one. Perhaps this is no biggie to most folks, but it really bugs me.

*****This thing is BIG! We had to do some serious rearranging to make room for it on our counter, and unfortunately the only place it fits is right in the middle so that it's the first thing you see when looking at our kitchen from the den (we have an open concept floor... Read more

I've had my Excalibur for a while now and use it on a regular basis. Before purchasing it, I tried several of the round type, including the Gardenmaster. This dehydrator beats the round variety as it has the side fan and adjustable thermostat. The side fan means you very rarely have to rotate trays and it cuts the drying time. The Excalibur is also much easier to clean than the round dehydrators. Besides using it for drying food, I take the trays out and use it to raise bread and make yogurt. Don't bother with the 5 tray version - you'll wish you had went for the 9 tray instead. The added height inside the 9 tray makes it easy to use for raising a bowl of bread dough.