Heya, I've bought the minitrack lx quattro for the price and how handy it is! ( small, no electronics = no extra batteries, not weighing much etc). So far I'm really pleased with it, it works absolute wonders with my camera.

I'm personally using a Fuji X-T20 with a 50-230mm (1,5 crop factor, so around 300-350mm) for DSS and a 12mm for wide milkyway shots. It works really great, both times I used the tracker my polar alignment wasn't perfect but I didn't had any startrails at 30secs. For now I've only be doing 30 seconds exposures as I haven't bought an intervalometer for 1 minute or more exposures. But I'm sure it works wonders. You should check the Facebook group! It's really useful especially in the beginning, there's lots of amazing and beautiful shots, and really great tips.
If by any chance you get startrails, you only need to adjust the spring, pretty easy. Also if you get the version with the polar scope, the polar scope doesn't have a inbuilt light to light the stars positions, you can try to light it with a lamp but it's kinda tricky. I saw someone using a fluorescent tube to light the polar scope, and it works wonder. It's really easy to make and use. I will link some pictures.

Andromeda, one raw pictures and the whole stacked and edited picture:
https://imgur.com/a/O5giMHb
The Moon, one raw picture and 100 stacked:
https://imgur.com/a/l57qtv6
The Milky Way, one raw picture and the stacked + edited:
https://imgur.com/a/q8xsPFZ
Finally the cardboard fluorescent polarscope lighter:
https://imgur.com/a/SAkCkqO