Thor (6-8). The joy of this arc is the mix of magic and science: the exact sort of thing you'd expect to find on Marvel Earth, but which is too often glossed over. It's also got some great character work. Oh, and great Simonson art. The downside is too much fighting with the Frost Giants. Still, it's worth reading if a bit shallow [7/10]. 
 Daredevil (9-10). Unsurprisingly, the Daredevil arc is the better of the two, because Waid has a good handle on both characters. It sets up some nice interactions between them, but is overall a great Hulk story [7+/10].