That's a really interesting pick, I think I'd go with a boring option in one of their 80s albums like Grotesque but The Infotainment Scan is a close second, that's right up there with the best of their 80s work for me.
Late response, but I'd have to go with The Wonderful and Frightening World of The Fall. I'm probably biased by the fact that it was the first Fall album I heard, but I love it more than any other of their albums. Also, I should give MCR another listen. I found it pretty underwhelming on first listen and never gave it a second chance...
I've been listening for less than 180 days and I'm pretty much working through their gigantic discog because literally everything is great (about a quarter is god-tier, half amazing and the rest still good). I started with Live at the Witch Trials but I reckon you should start like this; The Frenz Experiment --> Real new fall LP --> Bend Sinister ––> This Nation's Saving Grace ––> just see whatever you liked the most and go in that vein (check RYM embolden albums). Remember they're one of a kind so don't expect to be like oh yeah this sounds like xyz. Good luck ;)
Glad you've realized how much greatness in their discography there is to enjoy. I feel bad for people who think there's nothing worthwhile beyond Bend Sinister or even This Nation's Saving Grace, which seems to be a shockingly high number.