My brother is a gold-level master tech at a Jeep dealership, ie he beats on his tools day in, day out. While he started buying the Matco & Snap-On etc early in his career, nowadays if he needs a new tool he goes to harbor freight. If he breaks it, he takes it back for a free replacement. In the rare occasion he gets tired of returning a tool he keeps breaking, he'll buy the hi-dollar one, which often don't last much longer. 95% of the tools he's bought in the past few years have been from HF, and that's enough endorsement for me.
Edit: that being said I'd suggest buying the best ratchets you can afford, but use HF for your sockets and combination wrenches. I hate cheap, sloppy ratchets.