I think it simply points down to money and how much you have of it - if you (or parents) have plenty of it then there is no point going modular, but the majority of people aren't in that bracket so if you don't fancy paying off the best part of 100,000+ for the next 25 years with no guaranteed job at the end there really is only one option.
In terms of airlines preferences, there is a preference of integrated students to some airlines but they are mainly the ones who have done cadet schemes (BA, TCX, flybe), the majority of OAA graduates actually end up going to Ryanair where you can go as a modular student anyway.
For modular route it is seen to be best to stick to fewer schools as possible so if you are looking at schools for modular, you either have BCFT, Multiflight or OAA waypoint who do the full package after you have the PPL+hours, all have a good rep.