I go with beans. You get carbs and nutrients.

it genuinely pisses me the fuck off that producers aren't just putting fibre into everything they can, just use the leftover chaff from making white flour!

Fibre is the closest thing i know to a magic cure-all supplement, eat more fibre and basically all the little discomforts related to digestion just fucking disappear and you feel generally better and healthier.
But like it's really annoying to actually get extra fibre without fairly significant changes to your diet or spending extra on fibre-enriched pasta that's engineered to be basically identical to normal pasta, and yet there are plenty of products that seem like adding fibre would make no change at all to the texture, like just put some grain chaff powder in muffins!!!!

I guess it wasn't clear what I was responding to. I edited my comment with the quote.