I was a CFI for Florida Institute of Technology, I had friends from ATP. They didn't like ATP much.
Any school will offer the fast track thingy, and almost garantee you a job after. I would not trust them, even if they are big names like Riddle, Comair, Flight Safety, ATP. I met quite some people that ended up pooring a lot of money, and at best had an interview.
At the end, it all depends to your instructor, and it's not because he's working for a big flight school that he's good. In those flight school, it's not uncomon to have a flight instructor with 360 to 600h to teach you.
What says you have to get your private/ifr/commercial/multi/atp ina big flight school? A small flight school with a good CFI, and available planes will give you better results.
Working for big flight schools, I ended up bumping into stuff like:
- You are the 6th student today to do touch and go for 2 hour, your CFI is borred to his skull.
- The plane is not available, or late, but u still have to bring it back on time.
- The school throws his policies at you, and you cannot negociate this $1,500 overcharge.
- You better fit in the mold right away, CFI/management has no time to nurse you. As soon as you fall behind, you will end up getting kicked out, or refinance your house.
- When you go for your airline interview, let's say the simulator phase, you are judged on what you do and your personality, not where you came from.
Your best bet is to ask around, and get a flight school with a CFI that has experience. Don't pick up a 60 year old CFI with 15,000h either. Those usually have no clue what the modern stuff do, all this new regulation thingy, airline requirements ... but they are great at teaching how to land in the middle of a hurricane.
Private and Instrument are the two critical licences, get a good CFI and you will cruise thru them, AND make all other licences such as Commercial/CFI/multi easy.