Cabs can be nice. Growing up working on a farm, cabs kept the sun off you. Didn't have AC in the 80's on our tractors.

When we bought our mini excavator the guy selling it had the exact same model with a cab w/ac. It was only a grand more. I went with standard ROPS. Glad I did. It was hot last year and the AC would have been nice but I know I would have paid much more in glass replacement.