oregon,
I picked up a black 486 this weekend past. I am truly impressed with the quality on this $25 (purchased locally) knife from Buck. Mine has no side to side play at all, and just a hint of vertical play but no more than would bother me especially at the price point. It locks open with much more authority than the CS lockbacks I own and some Spydies I've had and the spring is very stiff. Its first test was to cut a pretty thick (40mm?) rope to make a tree swing on father's day and it went through it quite fast. The edge seems pretty thin and responds well to touch ups on my ceramic sticks. You were right about the blade stock thickness, it seems a hair thinner than my old 110. Its nice and light but has a very solid build to it, it's a keeper. thanks for the photos, they helped in making my decision.
Kevin