Thanks for the feedback fellas. I decided to go with the Harbor Freight set since I need them quickly, I forget they carry a decent assortment of automotive tools. In hindsight, I wish I had gone with Amazon as those sets are 9 piece for the same price as the HF 7 piece. By all appearances, the HF set look like cheap Chinese tools, probably comparable quality to what comes from Amazon. Even though it's unlikely I'd need all nine sizes, the larger assortment is handy to have for installing seals.
They spun my axle nuts off fine, so they seem good enough for what I need. For the one or two times a year (if that) I'll use them, I'm sure they'll last a long time.