I have good experiences with both the UD and VG, VG for portable hashvaping and the UD for at home. but some maroc can still be a problem, mostly some of the more expensive maroc has the tendency to melt together into one chunk immediatly after every time I stir it to create more surface area. with the VG this problem is less present, since the screen is bigger and not domed so I can spread out the hash more when stirring.
but personally I don't really like maroc anyway, makes me too sleepy, so I prefer nepal or afghan, both of wich vape well with my UD