Ryanair is my favourite airline. As long as you take the trouble to read all of the information which is on their website (and/or in the flight confirmation details that they send to you) you'll know exactly what you'll have to pay (and which is likely to be far less than any other airline will charge).
Ryanair's boss, Michael O'Leary exemplifies my idea of what every businessman should be like. He doesn't try to pretend that the company's number one aim is to be nice to its customers. Instead, he openly admits that everything the company does in order to maximise its profits. In my opinion, any company which actually cares in any way whatsoever about either its staff or customers should be drummed out of business as quickly as possible. Profit should be the sole objective of any business and we, the public, should celebrate those companies which seek to achieve it.