Dealer servicing on a plan is all very well for short term rentalship, where the objective is to have the book stamped, but for long term ownership, I prefer to know that the vehicle has been thoroughly serviced from the beginning.
Going back to my earlier post, the dealer will have a dozen or so cars on one ramp per day, whereas an Indy might have 2. The dealers mechanics simply aren't allowed enough time to do the job as they would do their own car. I mean, they don't even take the wheels off unless you've fallen for the "you need new disks and pads" scam.