I 100% agree with Dan and his answer to your question.

I have heard and read mostly about Savox servos showing this issue, and it is almost always caused by the servo being under powered. Usually adjusting the voltage via the ESC or using a glitch buster solves the issue.

I am currently using the Airtronics MX-V and it has been a great radio. I have had absolutely no issues, and it is more than adequate for someone who is new to or reentering the hobby.

I use the Hitec HS-5625MG servo and a SpeedPassion Revention S ESC, and have had no servo jitter or other electrical gremlins.