They're much more like Bird in that they are more mystery/thriller, even procedural in its protagonist's amateur way, than "slasher/horror." In general Cat is describe as a good follow up while Flies is described as stale in comparison. People also complain about the final clue in Flies but I had no problem with it (it's only a movie). I enjoy the three pre-Deep Red Giallos as they're more "follow the evidence" and less hair brained (not that they're not hair brained or that I don't love the hair brained-ness of his later stuff). I guess I'd recommend Cat first, then follow up with Flies if you enjoyed Cat about as much as Bird. I also say that because a Flies restoration/UHD is doubtlessly coming. It even seems possible Severin is working on Flies. Their last preview clue of Franco including four flies which seems too coincidental to me; with no alternative explanation. Like they commissioned it then later decided they need to push Flies back. So, they just kept it in (as it would cost money to change) and hoped it was subtle enough that they didn't take any heat. :adjusts tinfoil hat: It's sacrilege I know but Deep Red kinda loses me. Apparently it taps into some phobias subvertly (like claustrophobia), with no overt narrative. And since I'm not susceptible to Argento's pet phobias I'm mostly just bewildered by the scenes of "tension." I wasn't even aware some scenes are suppose to be taut until I listened to the commentary, Spoiler "oh, Argento doesn't like dead end hallways... That's why this scene builds just to an old dead end hallway and then cuts to the lead leaving the premise without going further. The lead had that fear too..." Add to that the over exposed look of the film and it's not a good watch for me. If it wasn't for Daria Nicolodi's part I'd probably think of Deep Red the way most people view Flies. I'll still pick up the Deep Red UHD. I've been unimpressed with the Arte Originale versions so far. I kinda like the included posters more but I already own more posters than I know what to do with. So, I'll save the money and stick with the standard LE sets.