Was installing these devices
In my opinion best output I saw was by choosing CMYKLcLmOrangeGreen configuration for maximum gamut output
Second was
CMYKLightBlackOrangeGreenWhite for those who needed white prints out too and still trying to keep up high output gamut
VG3 Is great workhorse, easy at maintenance, with touchscreen and finally with led illumination inside everywhere, great print quality and speed, cheap flexfire printheads, take-up unit included.too
What's nice - can register your vinyls in memory after tests - it prints them for first time and then reads output data to eliminate (or at least try to do it while printing) color shifting and price for about 15k for big one compared to UV's whose are 2x more expensive and prints can't be laminated (of course you can - just need to figure out right way but it doubles time till finish) and inks doesn't fade after only 6 months when used outdoors
ROLAND long time ago complained about cyan TR ink problem and trying to fix issue, because of some additions in manufacturing process released TR2, but if fast noticed head banding problem while test print is still perfect, best solution while new heads are processed for delivery is to swap cyan head with yellow one so client can continue printing and if nozzles are little blocked because of cyan ink's you won't notice any lack in print quality because yellow doesn't play big role in prints and head can recover itself back and you'll have one new in box for extra case
But mostly affected where users who were using TR inks from beginnign and then switched to TR2 via firmware upgrades, or who used both TR and TR2 removing chips to print out stock