Thanks to everyone, especially AEAJR. My main interest at this point to have a computer radio so that I can use the same radio for different models. Also I am planning to get a U Can Do 40 and it sounds like I'll need to be able to set it up different than I would be able to with my 6YG. I'm not planning to do any competition but I would think the 6exa would be able to handle the needs of a U Can Do 40 size. Maybe I need to do more research.