Funny seeing this old thread is alive again - the day after finding about a third of the cells in an *unopened* pack of "2031" alkaline Ray-O-Vacs had leaked.
Not sure any brand is that great, nowadays. Just don't know if after the Hg-ban - when manufacturers started advertising 100% Mercury-Free batteries - they ever really compensated for the loss of the thing which was preventing leakage (by suppressing zinc electrode corrosion into the electrolyte/hydrogen gas production etc.). Or maybe it's gotten too expensive to keep using whatever substitutes in chemistry or design they came up with.
PS (FWIW) From their website:
Energizer Holdings battery brands "include EverReady, Ray-O-Vac, and [in various regions] Varta"
and
since this is BITOG
"Our auto care product lineup includes well-known brands ... such as A/C Pro, Armor All, Bahama & Co., California Scents, Driven, Eagle One, LEXOL, Nu Finish, Refresh Your Car!, Scratch Doctor, STP and Tuff Stuff."