Alkalines are just evil destroyers of good gear. I no longer buy them.

I run low-self-discharge NiMHs in everything now. I can't recall having one leak.

I do use super heavy duty batteries sometimes, especially in older gear that prefers 1.5V rather than the 1.2V of NiMHs. Before LED lights, they were sort of a joke, but now they have a respectable run time. I find that it's rare to have one leak.