>>1579734I am of the opinion that /diy and /out/ are the best boards when it comes to actual knowledge, followed closely by /an/ and /o/.
/k/ gets an honorable mention but they're knowledge could be amalgamated in the boards I've already mentioned, ant they're too specialized. and crazy.
/lit/ and /sci/ are nothing but circlejerking intellectual-wannabe college kids trying to prove to themselves how smart they are in essentially impractical fields. sometimes the information is accurate but by-in-large I'd say those are the most pretentious and obnoxious boards.