Sstaurus,
Sorry, what I'm trying to say is that 70K debt, while obviously being huge, can be repaid in 10 years on a typical jet salary while still allowing a comfortable standard of living - even in London.
Where I think integrated isn't worth the cost is if you end up in a TP job, which seem to typically pay between 17K and 23K per year. Quite how one can live AND pay off the integrated course fees while on this salary I do not know. Survival might sum it up, and even though you love the job, I don't think I could justify it.
I think my point is, while the 70K sounds like a lot, if you get the jet job at the end of it then in my opinion it is probably money well spent. If you don't get the job then you have taken a massive gamble and lost - big time. In that respect I can see an advantage in modular as you are saddled with less debt, but if the job prospects with modular are lower than with integrated then there is a greater chance of failing to get "the job".
35K or 70K; if all you have at the end of it is some nice memories and a piece of paper from JAA then you are screwed either way.