I sat for the ASQ thanks to the fam for posting the help exam and it was one of the best moves of my working life.
With experience, no degree, and a black belt you could easily make 85K/yr.
Right now I am sitting on a BSME, MSIE, MSSE, and CSSBB. The black belt and my experience is carring more weight then my three engineering degrees!
Whoever, said that Lean is equal or better then six sigma doesn't have a clue. Lean is a good common sense approach to problem solving but it is not the scientific method on steroids like 6 sigma. In other words, 6 Sigma is more Quantitative and Lean Methodologies are more Qualitative.