Modular definitely
My personal opinion is as follows:
If you're under 26, apply like mad to the sponsorships/ bonds, or better still join the RAF. Don't pay out any money for self-sponsorship until you've exhausted those options or have turned 26, as things are improving, and you might kick yourself later.
If you're over 26, your options are limited, and you'll probably need to go self-sponsored. In this case, my personal opinion is to go modular, definitely. It's cheaper in the long run, you can pace it, and it is a complete myth that you stand a better chance with an integrated course. Maybe so for one or two airlines, but things change over night in aviation, recruiters bend rules, and you've got to look at the big picture, not just one or two dream employers.
My best wishes to you.