I like Bono's voice today better because it's softer, more melodic, better trained and he has the technique. In the 80s, he's done a lot of shouting. In the 90s, he learned how to actually sing, but then he almost lost his voice. In the 00s, his voice came back and continues to improve. He is a more conscious singer now and understands what he's doing better. In the 80s, it may have been more about emotion, but he was a reckless singer back than and knew nothing about singing. That's why he hurt his voice by straining it and "wrong" singing technique, or better: no technique at all. I agree, though, that there are good things about both voice "eras", but personally, I prefer him today, because I consider him a real singer today, which he wasn't back in the 80s.
As for the Wide Awake parts in Bad, they just blew me away on the Vertigo tour. I'd never thought he could pull that off again. In fact, I was cringing when I first heard that they did Bad because I thought Bono would fail (sorry Bono), but I was totally surprised how good he sounded and how powerful his voice is. I think the power keeps returning, and it's getting better if he gives his voice the chance to rest.
I would love to hear more good examples of "Bad".