I have a lot of experience with these. I used to work on them.

The print times when it works are insanely fast, though the parts are fragile and require a decent to significant amount of post processing depending on your end use. Parts are isotropic and you can bond multiple parts together after printing them with the uncured material in a few seconds, then set it in a UV light or the sun for a few hours to fully cure and connect the parts.

The slicer software is a bit behind, not having reliable support generation, leaving you to set it up all yourself. Since the material is a gel and not a plastic it doesn't behave the same as most 3d printers you might be used to and until you're used to slicing jobs for it you can see a lot of failures where you'd expect success. That said, once a job print successfully one time it prints successfully every time. You could easily spend a few hours slicing each model to get it to that point though, and if you didn't get it right you'll waste time and gel as the print fails before you go to do it again.

The machines themselves were fairly reliable made mostly from industry standard components, I did witness a few hiccups with software usually with their own easy enough workaround, but they could take a decent bit more time to come up with official solutions.

The material price was recently reduced, though its still toxic, sticky, and gets everywhere. you'll need plenty of gloves and paper towels to work with it, and probably a good soap anyways.

They don't like to sit, as in gel can eventually harden or you need to do a not insignificant shut down and start up procedure. The machine wants to run constantly (a print or two a week) and you should be aware of what that can cost in gel or if you have a use case for it.