Re: What kind of fantasy campaigns do you love?
All of the above. But my preferences on the details you mention are approximately:
Power Level: Low to Moderate beginnings, with slow but constant advancement that lead gradually toward the dizzy heights.
Epic-Ness: I prefer a more personal focus, where heroism is a genuine choice. If things get too epic, and the stakes get too big, then increasingly there's a sense of being only one right answer, lest the Entire World fall into ruin or whatever. I like it when there are lots of real choices with real consequences, and in my experience that means a little less epic, a little more intimate.
Earthlikeness: I guess my preference is a world that is "earthlike" enough so that I can learn the cultures in quick shorthand and start playing easily, but "weird" enough that further exploration and investment in the campaign begins to showcase the more alien elements. I like a swimming pool with a shallow end and a deep end. Entirely alien worlds aren't my cuppa, but I like a lot of weird to be waiting around the corner, right behind that perfectly ordinary-looking farmhouse
Long, world-spanning quests: For that it depends on the group's scheduling. If we can be certain to play weekly or biweekly, then go for long-term world-spanner, since we can keep it fresh in our minds. If we'll only be meeting monthly, on the other hand, self-contained episodes means I don't have to keep detailed notes of the names of NPCs that maybe even the GM didn't remember much, and what DID we do last time? Am I healed? I forget?
Political court intrigue?: As long as the GM doesn't mind me approaching it as satire. Plus, I still want to hit something now and then, please.