If your main requirement for a new radio is to feel as connected as possible and to give you the greatest chance of winning or improving your racing I think its OVERWHELMINGLY obvious that there us only ONE choice right now: Sanwa M12S.
Its not the prettiest nor the easiest to program but latency is the lowest in the industry and I have never met a single racer who didnt feel more connected with an M12s over whatever their previous radio is.
Look at EVERY ETS or on-road worlds A main grid over the past 2 years, the entire grid is most often M12s and it has little to do with sponsorship--top driverswill use the radio that gives them the best chance of winning.
If you must have a color or touch screen then no, m12s is not for you, but if you want the BEST chance at winningit is the ONLY choice--at least right now.