I don't use alkalines in anything important; over the years I've had a number of them leak, ruining the device. I buy the Kirkland ones and have never had a problem but 1) I've only been buying them for two years and 2) I only use them in throw-away flashlights and in my computer mouse at home.

So far I've never had a lithium cell leak, although I suppose it could happen someday. I've used CR123a cells in my lights for many years and never had an issue. The AAA & AA lithium batteries seem pretty robust as well.