I have a Cabelas unit and love it, it is only the 80 liter, but I can put 20 - 23 pound of meat in it at a time and about 7 hours depending on thickness and moisture have excellent jerky.
http://www.cabelas.com/product...BSearch-All+ProductsI use the Cabelas as well as other jerky seasoning kits sometimes mixing them for different flavors, I will marinade my cut meat for 4-5 days have gone as long as 7 with mixing it once or twice a day.
If you do a lot I would buy the larger unit. I wish I had bought the bigger one, but I will go through times when I don't make anything at all and then I have people wanting jerky and do 20-30 pounds of meat every weekend.