Manual or automatic production? Or a better question, how much "off time" will it have between prints?
If auto, go quartz. Period.
If time between flashes is too long, quartz flashes will cool off and take a bit longer to come back up to temp to flash so you have to learn how long to flash based on how cool the tubes are.
In the end though, the answer is still probably quartz haha. Once up to temp they are way faster than IR.