I have Snap-on short combo wrenches. They are quite useful, but not needed a lot. I also have short double box in both Proto and Snap-on. I really like those, and use them a lot more than the combo's. Particularly the non-offset Proto DBE.
As noted several times above, you don't generally use these in high torque situations, so quality may not be as critical. I'd buy any set that you like the fit, design, and finish on. For me, that would be much more important than the brand. Price would then be the deciding final factor. In my case, price wasn't a decision factor, so I bought the ones I liked best which was Snap-on for combo's and a mix of Snap-on and Proto for DBE. I had some SK's and some Indestro and Williams DBE's before I got the Proto, but upgraded them to Proto and Snap-on because I liked them better.
I had a few unmarked full polish import short combo's before I got the SO sets, they were nearly identical in design to the SO, and worked fine. I'd have no hesitation going to an import set if the design, fit, and the finish quality was good and you want to save the money over a more expensive set.
I recently got a brand new Craftsman short set as a freebee with a set of full polish metric wrenches I ordered to see what they were like. They were a POS. Definitely not worth seeking out and buying. I don't recall ever seeing a poorer job of broaching and finishing on a set of wrenches since 1980 era India tools.
