Easyjet. Pretty much always use them for short haul. Can't stand Ryanair.
Be careful though, only found out recently that easyjet have started charging for normal hand luggage cases. The free hand luggage you can take on is only a small bag. If you pay for an 'up front' or extra legroom seat, you get the large hand luggage bag free.
Our flight got changed a few times a few months ago as they rearranged flights to consolidate them, and it was delayed by an hour on the day. But we weren't too fussed - it happens.