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/

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.

the spacing between the ripples appears to be approximately the rotation distance of the wheels, is it only on that axis? ie. is it along the left/right side from the pics perspective or only the front/back?

i would check the wheels on the axis it appears for any damage or debris, and the wheel path.

I haven’t had driver related issues with nvidia for a long time, last was some kde wayland stuff fixed a while ago, before that using x no issues for a long time

it sounds like you need to invert the runout sensor detection, as it is triggering immediately.