Best career path – PMP or MBA or Six Sigma

Friends,

I am a Mechanical Engineer, with a MS, stuck in the same position for the past 5 years. I would like to get out and grow but unable to decide which career path to choose. The work I currently do is similar to project management. I don’t want to blindly do MBA and expect to get offers, as I don’t have direct experience in management.

My mind has also been wavering on changing my field to IT (like SAP for example) but is it wise???

Please suggest me……