I personally have a large assortment of hex sockets. Everything from KD USA, Proto USA, Snap On, Bondhus, Carlyle, Craftsman. I bought most all of them on eBay. I'm a heavy diy and bought the best I could afford at the time. The Proto stuff especially can be had new for real cheap on eBay. I also know a respected mechanic who uses an ATD master set on all his tractor trailers and big rigs. I was shocked when I saw that. Now you have to decide are you a light or heavy diyer. A light diyer can get away with any old hex socket set because he just doesn't need them often. A heavy diyer may need a more reputable brand to handle the abuse. If you don't have a torch or other pursuader tools to assist in the removal of stuck, frozen, stripped bolts, I'd recommend buying a good brand of hex sockets that will fit and grip the fastener.