Yes, I agree, I am playing with the new toy more and more so I will use more data. Hopefully it will slow down. I still can't find how to check what is using the most data.
However, with regard to battery, I found a great tool that tells me battery life and which apps are draining it the fastest. For anyone else out there, go to Settings > About Phone > Battery. You will have an option to view apps that consume the most battery. I also downloaded Juice Defender which seems to work great. I would never get through a night without losing 50% of my battery (with minimal services/apps running) and I was left with 90% this morning after install yesterday. Seems to work great.