Elegoo Mars to Form2 or Form3?

Depends on. For small stuff, the LED printers are actually good. The main difference for the quality actually comes from the software like how to generate supports than the printer itself. In that case, the formlabs definitely is better and easier to use. I have Phrozen LED printers too and I use the Chitu Box which is pretty good and it keeps upgrading.

Form2 has a large lager beam like 140um which is not as good as LED printers for small stuff. That’s why the Form 3 upgraded that part to be more competitive in the small prints area.

The annoying thing for Form3 is the cost. You will need to use the resin/tank from Formlabs since then. They lock up the open-mode option and put a tracking on the tank life which means you will have to replace it after a certain printing time or 4 months even you don’t print it at all. Unlike the Form3, form 2 you still can hack by using 3rd party resin ( 1/2 the price normally) and recoat your tank (I would say just buy a long-term tank and it worths the money).

It is all about my own experience. I owned a lot of printers since the early stage of desktop 3D printers came to the market.