I use the 3000 quite a bit. The 1500 seems to leave hooks some times in the finish. I have used the 5000 also a few times. I like the 3000 the best, usually wet sand with 2000 by hand first then use the 3000 on a da and buff after that. I use presta buffing compound on a Wizards buffing pad. On black I do finish with 3m though.