I have a Nesco at 700 watts with fan - another important feature - and it's great.  About $70 at farm and fleet.  I know the Excalibur's do more at once and maybe faster, but for a one or two trips for 2 to 4 people a year, I could never justify the additional cost and don't miss anything.  Besides for 50 weeks a years in storage and two weeks on the kitchen counter, it's a lot more compact.  We're I dehydrating food for large groups and many trips a year, I'd probably get the Excalibur.