I will avoid Ryanair like the plague!. I recall that quite recently Ryan was even considering charging £1 to use the on-board loo.
I have used EasyJet on three or four occasions, (the last time this January), and have been reasonably satisfied. Just watch your hold luggage weight to avoid a high extra charge. Hand luggage is not weighed.
Luckily there are loads of other operators, if you don't like Ryanair, use another. For internal UK flights I use Easyjet and Manx2 (I know IOM isn't part of the UK) and for European flights I use whoever flies to the city I want to go to, which usually rules out Ryanair.
They took me from Stanstead to Pisa and back from Venice to Stanstead. I had messed up on flight bookings with other airlines, and it was a case of any port in a storm.
I was pleasantly surprised the flights were unbelievably punctual, aircraft were spotless, cabin crew efficient. I hadn't a single complaint once airborne - the bad part was all on the ground. I had to stand in a boarding queue for what seemed an eternity, and people were decidedly tetchy.
I'm flying Ryanair next week so have yet to comment on their 'in the air service'. However, I did feel slightly misled after taking up advertised fares for £10 each way we were then met with a barrage of charges to try and negotiate once we'd confirmed the original fare. These included charging for check-in, any hold luggage we may have to take and being charged £5 pp each way to actually pay for the flights. Lucky for us we were only going for a short weekend so could get away with carry-on luggage, but i dare to think how much the final bill would be if we had hold luggage and had to check-in!