After being disrespected, taken advantage of, lied to and abused by Ferrari dealers for 30 years, my McLaren experience has been brilliant.
I bought my car through McLaren Houston. The experience was perfect from beginning to end. McLaren Scottsdale has handled any issues in a timely and efficient manner (fortunately there really haven't been problems). When I have needed parts, they have gotten them within a few days.
My experience is Ferrari acts like they are doing you a favor and McLaren wants to step and do you a solid.
Ferrari F40, Challenge Stradale, TR, 348, Mondial, 308
McLaren 570 S 'Track Pack'