Seeing as how both organizations have world record holders and a proven track record, you really can't go wrong with either choice.
Martin obviously used to work for Performance Freediving, before he started FIT, so you can be assured that you'll be getting the same great fundamentals with either course as well.
I just took an intermediate course with Performance Freediving and i thought it was exceptional; I vastly improved my own technique and achieved significantly deeper/longer personal bests because of PFI training.
Mandy-Rae and Kirk are great coaches & instructors and I plan on taking their advanced course.
good luck with your texas clinic.
cheers,
kp
