Have used them many times mostly because of the pricing and their proximity to the airport, but I don't think I will be using them for my last trip based on my most recent experience.
On my outbound I arrived at the lot at 5am in the in morning and after waiting a few minutes the shuttle bus came but did not see me so I had to run with my suitcase and carry on bag and the shuttle bus driver said she saw me at the last minute and was going to circle around and get me (ya right)
Return experience was even worse. After waiting a few minutes, the bus came and a couple of minutes later he just STOPPPED and got out of the shuttle bus and had a 5 minute conversation with a friend who was a security guard.
No apologies or anything (this guy would make a great TTC driver)
He then got back on the bus and we went to Terminal 1 (from terminal 3)
No one was at the designated the stops and once again we waited for another 10 minutes...
Finally we made it the self park lot.
I have never been impressed with their shuttle bus drivers, does anyone in Yelp Land no of any other parking options with good service?