Great online experience and very friendly customer care. After sales is pretty much flawless too, however I'm disappointed that GSF does not open on Sundays or it would be a straight 5/5. I work all week and fix car problems on he weekend as most hobbyists do, however I'm a tad more advanced than a hobbyist and only having one day to gather parts is annoying. With that said, if you know what you want and have spare time on a Saturday then GSF is cheaper than the competition by a long shot and that means your not going to stretch the time between services to the limit and service before its due. That's economic sense and in the long run a healthier engine. Overall 4.5/5 all the way but Sunday's is a must to keep he hobbyists in mind not just the main garages.