It depends on your personal needs/ wants. I still have all JR equipment.
jeti seems to be the new cool kid on the block but for me they were very expensive and full of features I dont care about or want (I dont need my radio talking to me or telemetry etc).
if the time comes that I need to replace my transmitter it will be with a spektrum DX20. Mostly because it will still work with all my receivers.
i can't say anything bad about Jeti, it's just not for me personally.