Chasing newer and newer versions is pointless,  did that with standard 510,  3 different versions made bugger all difference,  now have 686c dab,  so no ssd but still no difference to my oem b version I started with,  yes the screen is led back lit,  do you notice,  not one bit,  just get cheapest dab you can as in 3 months they'll be another 100 new versions as vw pump them out left right and center changing the letter on the end for little pointless reasons