Historically, had I been able to afford it, I'd have considered a self-funded MPL with a reputable airline. Now, after the recent situation my view is that unless an airline is paying up front, go for the modular route unless you can still afford to live comfortably after losing the entire lot.
The inherent financial instability of the airline industry is such that getting into pretty much any debt at all during training is not worth the risk, airline programme or no airline programme.