Wilmar W80277 Hex Key Set
Like the Pittsburg set, this one also includes both SAE (fractional) and metric wrenches. However, there are only 10 total wrenches, so you’ll be missing a few sizes. However, the sizes included are the most commonly encountered. Wilmar has molded the handles of these wrenches in two different colors, one for SAE and one for metric, which should greatly decrease the possibility of confusion. I like the idea of having one set that has both SAE and metric, because nowadays one never knows which one the piece of equipment they are working on will have.