I have and use a LunaPro (= Lunasix 3) and a Weston Master V with Invercone. When mercury cells went away I bought the Gossen adapter that lets my LunaPro use two SR44s. I prefer the LunaPro, I find it easier to use than the Master V, which has a fussy dial. I can't recommend any meter than uses mercury cells (that includes my LunaPro) 'cos the alternative cells are short-lived (hearing aid batteries) and expensive (Wein cells, and they're not that long-lived either). If whatever the OP gets uses batteries it should use readily available modern ones.
I had a Gossen Pilot 2 until I lost it in Alaska. Tiny meter, worked well, might be better for the OP than either of my larger heavier ones. Selenium cell, no batteries needed.
I also have the original Minolta Flash meter. Lovely artifact, very useful but needs mercury cells. Arrgh!
Today I bought a Sekonic L-328, also called Digi Flash F. Cute thing, works, and when I compared it with my other two I found that they agree closely. Comforting, I think. They could all be wrong together. It is basically an incident meter, has an attachment for metering reflected light and another that makes in a 5 degree spottish meter. Also not recommended for someone who wants to travel light 'cos the attachments don't stow inside the meter. More stuff to carry and not lose, so probably not for the OP.