http://www.popularwoodworking.com/pr...ional_sawbench
If you build this one, build it tall and then cut the legs off to a comfortable height. I still say knee high is the proper height. That's what my saw bench is and it is comfortable to use.
As I stated before, I built the Pop Wood bench. It is comfortable to use. I am 6' tall. If you are 6'4", you might want to adjust the height.