There haven't been very many dehydrators offered for sale on the web. But
now The Dry Store has the NESCO/American Harvest GardenMaster Dehydrator.
This is the leading choice for serious dehydrating. Can run with 30 trays!
In the preserving newsgroup one of the women usually uses 20. Some good
images here:
http://services.polaristel.net/~drystore/Dehydrator/Dehydrator_NF.html
I gather some people here have this model?
Don.