I would humbly suggest to do a Google search, not to find the right answer, but to see, everyone will recomend his trusted unit and there are many good ones. This question comes up often and like with many of our tools we are in the fortunate situation that we can base our choice almost purely on ergonomics without worrying about "performance".

I'd suggest an incident/reflective meter that has a Silicon Blue Cell and takes modern batteries for sake of consistency, like the Sekonic L308, but lots of people use selenium meters. The fewer buttons, the better it is for me.