I maintain 2 1/4 miles of roads. One mile of that is shared with 5 other properties. You mentioned road maintenance. For road maintenance I prefer my road grading scraper. It simply does the best job overall of the 4 commonly used implements.
Now my rear blade is great for making new roads, for ditching along the road and for creating a good crown on the road. It can work well for taking care of the roads, just a little more work than with the road grader blade.
There have been times when I have used my rollover box blade to get rises out of the road and fill in low spots, but once the road is how you want it, not much of a reason to use it after the road is established.
When I use my landscape rake, it is usually just to dress up the road, maybe pull some leaves off or just a raking to make it look good. Some people like to use a rake to grade with and you can, just not a reason to if you have other implements.
Something to keep in mind is that the heavier the implement, the better it is going to grade. If I could only have one of the four types of implements that I have for working on my roads, it would be the road grading blade, hands down.