Big, look over at RCgroups for the threads on the 9x. Yes it is a little different to program, but once you spend some time saying all sorts of adults words, it does become easier. I used mine for almost 2 years in the stock form then I upgraded the firmware. That opened the radio up to a mixing and switch assignments. You can assign any switch to do anything you want. Plus the new firmware doubles the model memory. I have used it for simple 3 channel foam planes to my FBL helicopters. It is not as easy to program as my Airtronics RDS8000, that is for sure, but after the firmware upgrade it does a whole lot more too.

Buzz.