Here are the differences that I am aware off.
- 3E is a little smaller and lighter than the 3X20 series. It is very close in size to the 3005 (previously the 790).
- 3E has a mechanical hydrostatic transmission compared to the e-Hydro on the 3X20.
- 3E has a single brake pedal. The 3X20 has individual turning brakes.
- 3E is two range. 3X20 is 3 range transmission.
- 3E loader is not quick attach (although the bucket is). 3X20 loader is quick attach.
- 3E does not have folding
ROPS. 3X20 does.
- 3E loader valve is mounted on the loader mast. 3X20 is on the tractor.
- 3E is way less $$$$$ than 3X20.
There have been several buyers of 3E on this site. There posts on there experience might be helpful to you.