lv2dive
Formerly known as KatePNAtl
I agree with both of you and can relate - my CCR certifications are from both TDI and IANTD, and while one of my CCR certs was for a unit purchased new, two others were not (one was for a unit purchased used, the other for a unit I did not own at all). However, understanding those limitations, I still find the data interesting, and personally haven't seen a similar breakdown (by manufacturer). It would be even more interesting *to me* if the data were just a bit more current.