Lots of advances in stereolithography resins since we started working with them in the early 90's. Big variety available now, no worries about getting any properties you want/need. Funny how some of the most brittle liquid resins ended up being the most stable, over time (no warping or cracking/crazing...).
Same evolution happened later with additive 3D processes, too.....better powders, filaments, adhesives....lots of material options now.
Getting closer and closer to real "production" parts now........if not there already.