After reading and reading about what the "best" kernel is, I decided to try out lean. I hear good and bad about all the kernels, so I just picked one and jumped in. I don't remember what I was getting with stock, but the results aren't bad, at least.
My "screen on" time, was a little over 3 hours, I don't remember exactly.
If I wanted to flash the stock nexus kernel, is there somewhere I can get that? I probably should have thought about it sooner, but oh well. I wouldn't mind running lean for a couple more days, and then flash back to the stock kernel and see how it does by comparison.