[Chris Hapstack]

I have the privilege of using a SLA printer at work (specifically, a Stratasys Objet30 Pro) and man is it lovely! Unfortunately it costs tens of thousands of dollars and is thus not something a company would likely donate to a FRC team, but if you can find a sponsor who has one then you're in for a treat. I haven't personally used a consumer-level SLA printer like one from Formlabs to compare, but at the industrial level SLA is quite nice.

Upsides: Incredible accuracy and surface finish (can hold tolerances of 0.004"), high strength of finished parts (compared to FDM, at least), and the option to print somewhat flexible parts (the end result being similar to polypropylene) in addition to rigid parts.

Downsides: High cost of resin, long printing times (would take 6-12 hours to print something the size of a tennis ball, depending on what material you're using), and much regular cleaning/upkeep needed to prevent a breakdown.

I will say the long print time is not as big a hurdle as one might think. The key is letting the long prints run overnight and coming in to a tray full of parts in the morning.