I’ve been using a ZWO ADC for several months now. Simple to use, especially with a Mak, SCT or refractor. With the planets being lower down from Great Britain in the coming years, getting one could be a worthwhile investment. The ZWO version is about £130 I believe, not cheap but they were a lot more expensive in the past.
The bigger the aperture the more benefit you’ll see, and I see a noticeable improvement even in my 7″ Maksutov when imaging below about 30° altitude.
Chris.