I had some hail damage repaired last year and had a PPF on my car and this came out looking like new. I think this group exclusively moved from place to place and setup shop seasonally to do hail work with insurance. They had it done in a two days, set me up with a rental, and gave me a $100 Visa gift-card after it was all said and done. About as painless as it could be.
I'm not sure if the work I had done would be the same as what you're looking to do as I believe some dents are removed better by using different methods (accessing from the back of the dent, heat, etc.). If they do this on the regular, I'd just ask what their experience has been as I'm sure they would have come across that scenario.