Choosing an 8x10 field camera?

I am trying to decide whether to go with a new (er) camera, such as a Tachihara double extension or Wehman, or if I should save a little and go with a used Deardorf. I have not handled a Deardorf, and know they have a great reputation. I just don't know them. I need a stable camera for field work shooting landscapes. They don't look solid, as they are quite aged, but I don't want to make an ignorant decision. Any input is appreciated as I narrow the search down.