Watch the Birdy!
I recently found into a really nice little Rollei 35 in a box of "camera stuff" I was given by a friend who'd help clean up an estate. The camera appears to be almost unused, but unfortunately requires a PX-625 / PX-13 mercury cell. I see there are a number of replacement options, with some having advantages over others. For those of you using gear that requires these batteries, what do you find is the best option?