This is true, but I dont think any will fit the saturn build plate, or none I am aware of. I just take the prints off the supports or plate and put them in the wash basket.
Elegoo are my goto for resin printing, they are one of the more open manufacturers, and their ABS-like 3.0 is actually very ABS like. I use it a lot for model railway parts and it goes very well.
I use a Saturn 2, but either Saturn 4 or Mars 5 (ultra has more features but ofc more expensive) would do well. Of your choices, I would definitely recommend the Saturn 4. their Mercury wash and cure stations go quite well. I still use Isopropyl for washing, but they do a resin cleaner mix that sone swear by.
It is only just announced, thus preorder (so wait if you prefer not to preorder) but tinymaker might be right up your alley. https://tinymaker3d.com/