My main concern is shrinkage. I am afraid most all of the low cost resins are going to have shrinkage rates which will make anything but small (jewelry size) parts a mess of distortion.
Good low shrinkage epoxy resins for stereolithography were introduced more than 20 years ago. Surely somebody can reproduce that for a reasonable price...no?
Time is money - I would prefer to spend the money (and save time) on predictable materials. Now I just hope for affordable and predictable materials...