Frick. Yeah, I meant brainer-days.
What I was... deliriously attempting to say, is that interrogating prisoners takes a lot of brainer time compared to just researching items directly. You also don't get the score bonus for the prisoner each time (only the first time) unless that's changed. Not that the score bonus is particularly superior to the ones you get from meaningful tech-advances. If you need to grind some score, it's better to sort by cost (a nice new feature) and research the random guns/items at the top.
Interrogation is still useful if you're at a progress roadblock, or in rare cases to get certain techs like shadowmasters (shadow chasing?). Or other techs ahead of time, skipping requirements, I think - but that just makes it a better idea to research the random junk first, increasing your odds.
You also want to research almost everyone *once*. A lot of even lower-tier enemies unlock research, and it also affects the score for capturing them in the future (almost always positively).
But yeah I did a much more optimized run and, despite having no interception (I'm still incredulous that people do interception with aircars and spikeballs or whatever, anything before Scarab) I had personal labs researched by the end of March.