About everything I use these days runs on AA's or AAA's, the division between those two types being pretty even. So those are my standards. I buy them in the largest packs I can find when they go on sale. My personal experience is that RayOVac alkalines perform as well as, and leak less frequently than, Energizers or Duracells. Plus, they're cheaper and come in even bigger bulk packs. YMMV.
That is odd because rayovac are the only batteries I have ever had leak. I just pulled a leaky one out of a kid toy last week, was from the last pack of rayovac batteries I'll ever buy, I'm tured of them and their problems.