Just curious, how much Langdon are you familiar with?
Honestly, not a ton. I'm familiar with his career. But as far as his films, I've only seen some of his Columbia shorts that have popped up on YouTube. And despite generally poor video quality, I've liked most of those. Cold Turkey especially.
While I've gotten into silents a little more the last few years, silent shorts especially, I'm still more of a sound-era guy. His talkie output hasn't been very accessible on home video over the years for various reasons. That's mostly why I'm not too familiar with his actual films.
The sound era works of others of the time (Laurel & Hardy, Buster Keaton, Marx Bros, Wheeler & Woolsey, W.C. Fields, Charley Chase, etc) has been much easier to see.
I suppose going into this set without much of an opinion of Langdon could be a good thing or a bad thing.