I have used a wades with various hot ends, Mk8’s with various throats, titan aero, and I have a hemera here that I have not hooked up yet (soon!). I would say ease of fixing an issue is in the order I have them listed, the chances of having an issue are also in thate order. Once I used the microswiss throats on the mk8’s (and 0.5mm nozzle) I really never have any issues. The titan aero was a pain in my butt for a whole year until the bearings died I just replaced them a month or so ago…it has never been better so I have to assume I had a bad set from day one, I am really starting to like it much better enough to get the hemera. I have to say they certainly improved the design by a lot and I did not realize it until I took apart the hemera.
So if I had to choose, a good mk8 with a microswiss works perfectly for anything I have ever needed, but the hemera looks to take it up a notch and overall is much lighter due mostly to the smaller stepper. In the end I think the design is fantastic and if the price is not a deal breaker it really is nice to have the “best” (direct drive) once and a while.
I want to make a z axis bed printer and for that I would certainly want to try a remote drive and go head to head with a hemera and see how much speed you would need to sacrifice to do it.