Of course fully anecdotal, but my experiences with ryanair have been mostly fine - the planes are shit and they try and sell you bollocks on board but they run on time and it all kinda works. Easyjet on the other hand... mamma mia, getting a refund out of them is a gauntlet, and at my local airport >50% (!!!!) of easyjet flights are delayed or cancelled.

Haha except expectations are managed (read low) with EasyJet or Ryanair. They deliver exactly what you pay for and expect.