Theta data basic II transport?

It is obviouse that for its performance used Theta has an increadibly low price (??)
May be there were too many units made and depreciation is higher than in other transports?
Right now I do believe that in $400 range you will not find a better one.

I have a dealer friend who says that they have had many returns and service requests for the theta data II, and III. Make sure you find out repair prices from theta prior to purchase

how does theta compare to a Cal delta???