COOP Wads

Can you guys recommend some good Doom 2 coop wads, for the average player?

There have been threads on this topic. It's hard to advise anyone, particularly with so little information provided (Number of players? Preferred playstyle? Preferred visual style of the wad?), but even then it's just about throwing names of random wads people have an experience with.

Something two player preferably and has a classic doom feel. Maybe something not a demonic, I like tech based levels a lot more.

BTSX Episode 1 has very quality techbase maps. (By the way, the wad will be played in today's ZDaemon Thursday Night Survival, which starts within half an hour.)