I use what I can afford. Some things have been given to me, most I bought. Depends on what it is and how often I'm going to use it.
As far as hand tools I have Craftsman, Stanley, Channellock, Snap On, Husky, Duralast, Great Neck, etc...
Power tools, Makita, Ryobi, Black and Decker, Milwaukee.
My 3 ton Craftsman floor jack blew a seal and didn't fit under the Camaro anyway so I bought a 3 ton low profile Torin from WalMart. Works great. I have Craftsman stands and ramps from WalMart or wherever.
With my mish mash of red headed step child tools I engine swapped my Chevy truck twice (including an LS 5.3L swap), lowered it, did the top end on an S10, a few hub assemblies on late model Chevrolets, numerous set of brakes, and countless other projects.
'13 1SS/1LE-Inferno Orange-Borla SType-Katzins-RotoFab-Elite Engineering-Michelin AS3-IOM Interior Pack