I got into this discussion with a proud owner of a new technicolor radio.
(I use Sony as my preferred TVs -have four of em)
anyway - the computer radio came along in early 80's and I have had the chance to try em all.
The current JR10X - I obtained before the 9303 came to be

Both require that you select a wing type from a wing screen
The 10X however does not use a "setup mode" as does the 9303- you can switch back and forth thru all functions without ever have to kill power and restart with power AND enter at the same time
But the 9303 has a nifty way of letting you try a setup (in the adjustment screens) and then switch to the default screen and then switch back to the adjustment screen you were using.
This is handy if you are -say adjusting flaps-
On the 10X - you would have to punch in the right screen code first.
In following thru the number of steps ( punch up a new screen) required to do a given task - the 10X is usually the best -but some times the 9303 is the best .