+1
It's always good to catch what you can. Unless a gal bites it, of course (but wounded is ok, there's more gals ready to fill up her spot!).
With the pirates tech path and the amount of time it takes for the first mind probe to appear (Its the first time in my almost two decades playing x-com that I was cursing out loud for not finding one of the damn things) you never know what is usefull, so capture and beat the crap out of them all. They must speak.
Even the seemingly lore only entries have hidden secrets. So capture them, beat them, buy them dinner talk to them dirty. Dont know how you will do it, but make them spit it all out