Well..............
I'm not sure why you find the 6EX difficult to input, but that in itself is a worry since most (if not now all) transmitters are going to seem more complex initially till you get your head round them. While FASST is a robust system, it's long obsolete and support is now fast disappearing. I have two 6EX (well actually six but the others are 35MHz!!) and a 10CG, so do have experience and am not just spouting regurgitated internet rubbish!).
As FASST was going obsolete (near five years back!!) I converted to FrSky with a batch 2 early Taranis and bought a FASST Modu