@co3dprints on the topic of finishing, if you’re talking about sanding and painting, generally resin should be easier to sand than ABS or PLA, and comparable to paint. Resin won’t melt due to the friction of sanding, so it should be easier to dry sand or use tools like a belt sander or Dremel.
What you can’t really do with resin, however, is use heat to fit or reshape items. For instance, when making lens caps, if my PLA or ABS print is slightly too big or too small, I can heat it up and squish/stretch it to a precise fit. Or if I’m making a clip and it ends up too tight or loose, I can adjust the angle of the clip using a similar technique. This doesn’t work with resin prints.
You also can’t use solvents to surface resin, like you can with vapor smoothing ABS using acetone or PLA use MEK (not that you’d ever want MEK fumes anywhere). On the other hand, since resin is very solvent resistant, you can use a wider range of thinners and carriers for paints and sealants.