I currently use a JR8103 8ch 2.4 tx. I want to upgrade to either a 9303 or 10x 2.4. What is the major difference between the 9303 and 10x other than the obvious single channel?

I am looking for input-would I be better off getting a used 10x and 2.4 module or a used 9303 and a 2.4 module?

Thanks in advance,

Kev