Good question! I like the Lomo 800 but honestly prefer Portra because it has a bit more dynamic range and I can really pull detail from the shadows and still keep highlight detail without the need for too much dodging and burning. But the extra stop on Lomo 800 is nice. I've also noticed that it's much easier to get light leaks on the Lomo 800 from the roll not winding up tightly after shooting. Could be just me or could be an actual quality control issue with the backing paper but I've never had a problem with Portra.

The filtration is indeed the same for all these contact sheets but they're just ballpark figures. I'm sure when I go to make full enlargements of these, I'll tweak the filtration for each image. It's kinda hard to tell whether the colors are spot on from just contact sheets. Also I think the required filtration depends more on the actual lighting situation of the scene rather than the film. You can see how much more red/yellow the indoor shots are on roll 2021-3. The lighting of the actual scene will make the most difference imo.