I basically bought it because it was the most cost beneficial.
I looked at three different transmitters:
1) Graupner MC28 3d
2) Flysky PL18ev
3) Frsky tandem XE
of the three, all have the extended 3d sticks. Only the XE has support for 3d party rf modules, the others only output PPM. All 3 support advanced ground vehicle mixes, although the tandem really has no pre-defined "wizards" for ground vehicles. the PL18ev has tons of support for ground vehicles.
for me, due to shipping costs, the XE ended up being about $150 cheaper than the PL18ev, and about $500 cheaper than the MC28 3d. The ability to use either TBS crossfire or ExpressLRS modules for my submarines was also mandatory. I have used three different models of the Frsky radios, as well as two different Radiomaster models. the radiomaster and 2 of the 3 Frsky radios use opentx/edgetx, so they are programmed identically, and everyone says that Ethos should be easy to understand if you are familiar with opentx/edgetx. I am afraid that i do not have the ambitions that Mr. Fabri has regarding hardware customization, but i do want to setup advanced mixes for a couple of my tanks and submarines.