Gossen Sixtomat - flash
My vote is for the gossen Sixtomat.
I also have a spot meter but the Gossen is so quick and reliable the spot meter is used very rarely.
A single AA battery Large display and very precise controls.
Can average a scene's highlight and shadow readings if you require.
I have had Gossen meters for nearly 30 years and the only unconfortable thing for me is that the incident dome is not located like a Seckonic 398.
Still it is a small price to pay for an amazingly light strong meter.