It sounds like the box is the way to go. I don't have an easy way to tilt left or right as I go (I think I'd need a wrench). I think 93Turbo told me what I needed to know. I hadn't considered filling in low spots like that.
a box scraper all the way its much easier to control your material. If you have enough tractor to pull it full when you are grading your drive way you can pull it full of gravel and it will fill in the low spots and where the driveway is good it will kinda float over the stone there instead of a reguler blade that just scrapes the stone away. Plus if you add wheels a couple feet behind the box you can use it like a land leveler and leave it as smooth and level as you want