I use magdrives and love em, never a single issue, though I know others have. All personal preference and a bit of luck.
On topic of Jebao, I ordered 2 wavemakers, WP-40, I ordered another one but got an even better version as vendor must have beem out, RM-15 or something can't exactly remember but a slight step up from WP-40, and I tell you I couldn't be happier with both units. Cheap, effective, and my big female stingray just LOVES surfing the current right over it. Now I do only use the continuous setting at the highest power, so don't know how the rest work, but not a single issue in 1.5 years.