Old school vs new school?
I would agree with some of what potkettleblack has said, however whether a school has been around for a while or is a new setup should not be a deciding factor.
Some schools have been around for years and years, yet I hear and read bad comments about things like their level of customer service, aircraft availability, lack of communication/organisation etc. all the time. So they've been around quite a while and still struggle to get things right!
Also some of these charge inflated prices based on the fact that they paste airline logos all over their brochures and website, and they seem to charge what they want simply because they have been around a while.
(Please note the above are general comments, not aimed at any specific school).
I can think of deffinate advantages of going to a new setup. The owners/operators would have spent a great deal of time and money to get it off the ground, they will probably have enthusiasm and a willingness to get things right by the bucket load. They may also have newer aicraft. Instructors would probably have to be well paid in order to ply them away from their existing jobs into what could be a risky venture?
They will be grateful of your custom, not like some where you have to grateful to them for taking you on.
Never go for an FTO simply because it is cheap. But don't just look at the cheap places and ask "why is it so cheap, whats the catch?".
If a place looks expensive, I have to ask "OK, what extra am I going to get for my money?" and "what are they going to give me/do for me what a cheaper place can't". After all, this is an expensive business we're in, and if you are to pay more you should certainly expect more.
Finally, Mercenary Pilot is right, never take anybody else's word for it, go and visit a place and take time to think things over before taking the plunge.