Where Should I Get my TEFL Certification in Prague?

Are there any alumni of Prague language schools out there? Would you like to tell me please your recommendation of a great place in Prague to get my TEFL certification? Comparing language schools online can only go so far, sooner or later I need to hear a real human's recommendation.

I'm interested in teaching adults primarily -- Business English. I'm especially interested in hearing if anyone has used their TEFL certification at a particular school toward a Masters in Education back home in the States. Were you able to have it accepted as graduate credit? I'm leaving that option open if I enjoy the work as much as I think I will.

Tell me why your school was great and why.