Dehydrator advice, opions and input sought.

We've been using a Nesco, 4-tray model for a few years now and would like to increase our capacity. So far, all of our research points us towards the Excalibur 3926. This model has 9 trays and 15 sq. feet of surface. It's very expensive compared to our Nesco. I noticed the heater is 600W whereas the Nesco is 750. Perhaps the difference in capacity is in the fan and airflow design.

Anyway, any dehydrator experience you'd like to share would be greatly appreciated.