Used Golfsavers 3 times in a week. What I liked was being able to book and pay for green fees, cart, caddies and transfer to/from course in a single transaction, with a single payment. Even going on a course's own website to book, it would only let me book and pay green fees; I had to book cart and caddies on arrival at the course. For my 3 bookings (Hua Hin, Thailand) they were totally reliable.