I wish they hadn't stopped the production of the 558R (I think that is the right number). I have one, which is also incident and spot meter, and it is amazing in situations where you want to see individual values. I would get a 758, but they seem insanely expensive compared to what the 558R retailed for.
To the OP: You should do a bit of homework with the spot meter and your camera(s). Personally, I would find something, with a bit of detail, and a bit of color. Spot meter that (so it's middle gray), then take exposures adjusting your camera one stop at a time until it's blown out. count the distance in stops between the initial reading and the last spot you preserved detail to your liking, and then when you are in the field, you'll have an idea of what you can expose for and retain highlights. Basically, you found (and I may have the number wrong) Zone 0 for your camera.