Not really. Except for some really cheap radios, modern radios are similar in nature in terms of resolution. With a 9CAP you can definitely tell the difference. In any event, a digital servo will always have more centering and holding power than a similar analog servo. With cheap servos you can also get blow back because they cannot hold against control surface pressure. Also, with a 2 meter airplane, the engine shakes things quite a bit, and servo also has to overcome that effect on centering. Because of the digital serovs much higher sampling rate, it maintains much more holding power at whatever commanded position it is at.

Jon Lowe