Only because I have a biased opinion, out of the 2 I would pick S-K. I recently started looking at Williams......and looked at a few Wright ratchets based on suggestions from other members. They do look like a sharp piece of steel!
I would buy the Wright. SK is good also. I have more SK than Wright only because SK is easier for me to buy. My SK dealer is only 1/2 mile away. I love all of my new SK (Idea) tools so far.
Both are good choices... Between the 2, they prob make up 80% of my drive tools. In regards to Ratchets, I favor Wright....but Sk is right there and both are affordable US options if your into that thing.
I would pick Wright for ratchets because it has a slightly higher tooth count and the grips on wright ratchets are meater versus sks which have a slimmer handle.
I have a 3/8 SK ratchet and I have took lug nuts off a Bronco with it by kicking down on the handle. I had no other option and I was impressed as hell that it did it. Had that ratchet for twenty years. Never had a Wright. I would buy both if it was me.
I have both, both are good. I look for used ratchets of all, well most, makes. I have never found a broken Wright ratchet, but I have found broken SK. On the other hand, There are more SK tools around.