I never had much of an emotional connection to Ultimate line other than enjoying Ultimate X-Men for a while, but I think it dropped off after Brian K. Vaughn's run. I get that Loeb's polarizing, but he's also been responsible for a ton of great stories as well. Batman: The Long Halloween is a seminal Batman story. Spider-Man: Blue is a good standalone, retro Spider-Man story. Haunted Knight is a good set of anthology stories he did with Tim Sale pre-Long Halloween, plus Long Halloween's follow-up Dark Victory. I like Hush a lot as well, except for the last couple of issues where I felt like they didn't stick the landing. I get that people are angry about Ultimatum or whatever, but that doesn't suddenly erase the good stories he's worked on over the years.