I think if you look back you will see that your initial question is a highly contentious one here and is likely to provoke lots of heated personal and differing opinions.
Probably the best way of securing a job is to get yourself on to one of the 'tagged' / 'sponsored' schemes. Beyond that, from what I have seen, it does seem to be a case of being in the right place at the right time i.e. qualifying during a busy recruitment period which is something that simply cannot be predicted at the start of training it seems.
Lots of large FTO's will make promises of assisted placements at the end of your course but some feedback on this site suggests that at least some of the recruitment statistics are from the efforts of the individual rather than the school putting in loads of effort on your behalf to secure interviews.
Proponents of the modular route will rightly point out that the licence at the end of the course is the same as that from an integrated one and often at a fraction of the price and not necessarily taking any longer to achieve. That said, if the marketing departments are to be believed at the large FTO's, then securing your first job which is your biggest hurdle should be 'easier' with them. If that is the case then is saving 20k upfront but struggling to find a job for another 1-2 years worth it in terms of lost earnings etc.
It sounds as though finances are rightly of importance to you in your training so traditional integrated may be too costly an option. You could try looking at the CTC programme which despite involving a non-secured (but bonded) loan does appear to 'guarantee' a job at the end of the course.
If you are able to continue working while training then modular could well be right for you as it lessens the risk of a potentially lengthy delay between getting your licence and securing that all important first job.
So in conclusion - I haven't really answered your question have I? However, as everyone's situation is so individual as is their attitude to training etc, it is not really a question that can easily be answered for you by strangers on an Internet site.
Perhaps go and visit a few schools and speak to some of the students there, see what kind of organisation would suit you?
Phil.