I would research the Ember a little further, it seems as if they are stopping production, and I would be worried about support issues for you (https://3dprint.com/170791/autodesk-discontinues-ember/)
The Form1+ might be an excellent option due to the price point and the ability to use OpenFL (to tinker with all the setting you are interested in). Granted, Formlabs did officially stop production of this model as well, but I think it’s like 5x cheaper than the Ember.
There is also an Wanhao Duplicator 7 that only goes for $499, but it’s DLP (https://www.3dprintersbay.com/wanhao-duplicator-7-sla-3d-printer). To be honest, I might just buy one based on principle. It is so dirt cheap compared to everything else. I would be curious if anyone else has had experience with this printer?
I’m not sure if this was meant as rhetorical or not coming from you but OpenFL definitely does not work with the Form2 at this time.
Hope that helps a little!