Personally, I prefer more busy jobs - which is why BRD and AST have always appealed to me. I always feel like I'm juggling something, and that keeps me engaged. Of course, I also have moments where I prefer to not juggle so much, so I play a "simpler" job like RDM or WHM. I've also always liked priority rotations over a strict 1-2-3 rotation.

I've seen a lot of players say BRD is particularly difficult to play because of all the stuff you have to keep up with, but I've never thought that. However, I've been playing it since I started this game in early HW. I think when you've played the same job for so long, it becomes second nature to you, and you can't grasp how others who haven't played it for years find it "too busy" or "too complex".