Sunex all the way. Absolute best bang for the buck impacts outthere. I purchased two sets of deep impacts SAE and MM back in 1992, I have yet to break one. I "upgraded" to SnapOn metric a few years later in 1995 or so. I eventually swapped all the common use sockets (15,18,19,21,22) back to Sunex because SnapOn dealers were starting to give me a hard time about warranting worn out sockets. I can't tell you how many lug nuts the 19 and 22 have removed and installed over the years but it is a lot, never warn one out. SnapOn would last a year at the most before it would get so loose that it would start to stick and be a PITA. Hind sight the only SO or other high priced impacts I would purchase would be swivels because you will break them no matter the brand and warranty is easier with a truck.