Choices! We have no idea what the OP wants to spend nor his spending tendencies. Frugal or "buy once, cry once"? Buying a used one requires the same diligence buying a used vehicle. Buyer beware.
Now a days, when I'm buying a tool for myself (vs. workplace) that won't be used often, I try to find the middle ground.
In this case, I would favor a tool that is at least sold by a tool company/manufacturer that has it's credibility on the line. The AC Delco wrench is probably analogous to a bicycle sold at Walmart with a Schwinn tag on it. The etork listed by the OP has an impressive pedigree (JS Technology), but little presence/support other than its website. IMO, Tekton would meet my definition: better than the no-name cheapies but not Snap On, Precision Instruments, Norbar level. Just my opinion.
Let us know what you choose ICurious. To torture yourself, study the Garage Journal forum, the OCD tool forum equivalent of BITOG. I have Precision Instruments Split Beams in my tool box (buy once, cry once) - great deals were available years ago.