This used to be a great service with the free wi-fi and outlets, but recently the quality has deteriorated. The buses run infrequently and they don't have the resources to send extra buses to keep the schedule when traffic is heavy. Late-night pickups are done by much smaller shuttle buses without the advertised amenities. The drivers are rushed and frazzled trying to keep up.
Taking TTC is probably the better option if you're looking to save money, and you'd be better off springing for a cab if time/baggage is more a factor.