I'll add my 2 cents...
Graduated 09 from CTC, entered the then huge hold pool and waited a whole year for the call. Started flying for easyJet as flexicrew but took the first opportunity to go permanent and it all worked out.
CTC as a school is extremely good, I've flown with about 4 other schools and CTC was by far the most professional, it is very demanding but also rewarding as they truly do take you from zero to hero.
CTC as an employer (flexicrew), not so good, back when I did my time as flexislave, they took advantage of our leave and other things. I joined when flexicrew didn't even exist and I don't know if I would take the plunge now.
My final verdict, if you have the money and aren't putting yourself or your family in financial risk... go for it, it's a pretty good way to get to the rhs of a jet provided you make the grade.
All of my mates are flying for airlines now, most of them are still flexi, a few of us permanent. All relatively happy though.
Best of luck!