woodpeckers tools vs Amazon knock offs?

I'm in the market for some good squares and measuring devices so my first thought went to Woodpeckers. An Amazon search reveals I can get a (probably Chinese) knockoff for 1/6 the price. Does anyone have experience using both the knockoff and woodpeckers products?

It's tough to justify the expense of Woodpeckers if I can buy multiple generic products for the price of one WP?

community feedback?