From the ones you listed I stuck with Autumnlands. It's pretty good magic/fantasy, but takes some time to get going. Issue 1 is gorgeous, but then #2 is just a big dull fight scene and it's not until issue 4 that it really starts picking up the pace.
Art is solid throughout, though a bit heavy on muddy colours for me. Technically it's very proficient though, Dewey really makes all the anthropomorphic characters work, even bizarre ones like the giraffe, and the magic spells look grand and colourful. Busiek frontloads every issue with a big wall of text, a stylistic choice it took me a while to get used to, but ultimately it fleshes out the world pretty quickly.
A few times when reading it I kinda wished that Busiek/Mignola comic for Final Fantasy had ever materialised.
I have one big gripe with it which is a spoiler if you haven't read until #3, so read at your own risk!
spoilers:end of spoilers
So basically the flying city is the 1% here, getting rich by exploiting the Bison tribe living on the planet's surface (that's all shown in the opening pages). But then the bisons somehow become the villains? At times it feels like the story would be more interesting from the bisons perspective.
Ultimately Autumnlands is a solid book, but I haven't fallen in love with it yet as I did with ODY-C or Saga.