Most people I have spoken to that paid ratings on ATR/Dash8/Bizjet have paid pretty much the same as Ryanair/EasyJet want for a 737/A320 rating.
Because of this I would say ignore what nuage blanc will tell you and go for one of these two choices.
In both cases, if sucessful, you will have a job at the end of the training ( although at the moment in Easy probably only for 6 months.)
Whatever you do , don't pay for a rating unless there is an offer of at least a temporary contract at the end of your training,
otherwise you are just wasting your money, as the other companies will always take the trainees affiliated to them first.