Or perhaps its the tragegy that 10 people have died in the Gulf of Mexico as recently as 23 March 2004 over 20 years after the first AIB recommendation for the lack of the completely alien in the US, but cheap and simple AVAD system.
My own (ex) company had the requirement for AVAD written into its "standards" book as they were "worlds best practice" and only now I believe are starting to fit the kit. We cant rush into these things.
And thanks to all for the replies. I guess I'll just have to get the wallet out and spend some hard earned. Always make Pprune the first port of call when shopping because its such a knowledgable and valuable resource - and its free.