I wish I could settle on just AAs.

My head lamp uses AAAs. If I could find one that I liked as much as the Tikka that ran on AAs and didn't have a battery box on the back I'd go with it. I've also got a couple of Solitaires still, but I'm probably going to replace them all at some point.

My Surefire uses CR123s. If I could find a comparable light that I could afford that used AAs, I'd go with that to.

Leaving me with my mini strobe, which uses a pair of 2032s. Not sure much can be done there.

Everything else uses AAs.