I've done it in the past, and the best advice I could give you is if the dent is any more than just a small ding, the best you can expect normally is about an 80% fix. If you found someone exceptional, it could be better. A painted repair will always be significantly better if it's a large area that's repaired.
Good choice. I will say though, the paintless repair will probably be less than your deductible, and even if the repair is only 80% your average joe won't notice it at a glance.