There are not that many suppliers that offer support. Especially not on FleeBay, Alibabi, Wish , Banggood or other marketplaces.
I had some dealings with xTrons and must say I was not disappointed.
Have to say this unit looks rather "dandy":
https://xtrons.co.uk/bmw-rover-mg-va...-rom-psa8046bl
Would love to have that unit myself but unfortunately the unit I have is behaving rather well