For some reason i like Nitro a lot more than AC, maybe I was just happier when I rode it. I have Nitro and Diamondback at the top of my list of B&M hypers.(have not been on I232 yet)
6.5 hours for Kingda Ka the first week it was open. I think they were still getting the launch dialed it, lots of break downs and roll backs. It makes the ride a lot more fun when you are not completely sure you will make it over the top.