This is as good as it gets for transportation to the strip hotels from the airport. My experience has always been good (not great).
More recently, the driver was so busy trying to get a tip from a passenger, I had to literally get my own luggage from the back of the truck. Needless to say, he wasn't tipped. The price was $7 one way and $13 rountrip. From what I hear, it is approximately $17 one-way to take a cab from the strip to the airport.
Very simple process! Just call them 24 hours before you depart and they will give you the time they will be outside to pick you up.
On the return, they told me they would be outside at 8:40 PM and they showed up at 8:36 PM. Sold!!!