I have had nothing but stellar service and friendly staff when I have used Blue Sky.
This last trip, yesterday (5/14) I was in such a hurry, that I actually left one of my bags in the parking lot when I left! I didn't realize it until I was almost home and got a call from Danny (Denny?) letting me know that they had it and would hold it inside for me. If I had parked at Sky Harbor, I doubt I would have gotten my bag back... I was so impressed by their service and hospitality.
I will never use anyone else. Look for the deals on fb and Groupon... You will pay the same or less as other parking places, and get soooo much more.