easyjet
To be fair I've never had a problem with EZY, but I prefer to fly FR, mainly because of price and their punctuality.
EZY are trying to attract the business customer through being able to jump on an earlier flight home, speedy boarding plus etc.
Ryanair have more of a job attracting business pax, especially in EDI I've noticed. They will tend to fly Aer Lingus. Who knows why though because the flight timings are terrible and they are never on time!