I use Harley Rakes, pulverizers, and occasionally a tiller. The tiller is only used if there is heavy vegitation. The Harley Rake is the workhorse and does almost all of my work. The pulverizers work good if the soil is not too heavy, or already loosened. I also like the pulverizer for the final pass after the Harley Rake and before seeding.
If you have rocky soil, a Harley Rake would be my suggestion.