We have Payless Shuttle reserved for our trip in November (unless I find something better). The main reason we booked with them was because they provide a car seat for our 2 year old daughter as we really don't want to pack one onto the plane (we are already bringing a stroller and 3 suitcases!)...Payless is private and $60 each way...
That is a bit high, thank you for checking Palenskec. May just have to go with the taxi for $45/$65. The thing I dislike about supershuttle is the one time we used them they were at our hotel to pick us up almost 90 minutes before we scheduled them and we were not even packed up yet.