I use a Sky-Watcher
AZ-GTi. There has been a newer generation available for the past couple of years now. I bought mine nearly 5 years ago.
The AZ-GTi specifically is the wrong kind of telescope mount to use for astrophotography. As designed, it works as an Alt-Az mount for a telescope and does not track equitorially. But Sky-Watcher provides an alternate firmware that allows you to modify the mount with a stock EQ wedge and turn it into an equitorial mount. There is even a way to add a counter-weight to help balance better. It depends on a phone app to point to a sky object (it is a go-to mount) and begin tracking. I have found that in Alt-Az mode it is convenient for tracking the sun for solar photography (and this works without having to polar align at all).
So I know this option won't be in your wheelhouse, but I throw it out there for future research. Actually the newer generation of EQ star-trackers by Sky-Watcher have the smartphone connection and smart go-to ability. I find the go-to feature to be mandatory. I am often taking photos of things I cannot see at all in the sky unless I crank the ISO on the camera. But the AZ-GTi has a larger payload factor and easily handles a DSLR and Sigma 150-600mm lens.
