I have built Moonswitches with both a Coregut speedy case as well as the generic Ali speedy case- thought i would show others the differences:
Corgeut:
Generic Speedy case that is all over Ali express:
My Corgeut is the Mars dial- the generic speedy is the Uranus dial.
The Corgeut lugs are more tapered and elegant- and the case is thinner by 2mm- a lot of it being the caseback:
Corgeut caseback on the right ( please excuse the disgusting cuticles- I have been working in the yard..)
Corgeut is about 40.5mm measured 10 to 4 OClock- the generic speedy is a bit over 42mm
Overall the Corgeut is a slimmer more elegant choice with one glaring problem- the lack of "crown guards" on the case. The Ali case has some nice contouring as opposed to the Corgeut where there is none.
sorry for my terrible photography but I hope this gives some insight to others considering a build.
Enjoy the weekend.