After six months of weekly travel I've gave up on EasyJet, it seems that around a third of the time their last flight was delayed. Problem for me was I needed to catch the last train* after the flight otherwise I was stuck. RyanAir always seem to be on time, but I was on their early flight.
Noticed that on my (old) route the prices increased for the summer schedule, so its just easier and not much more expensive to use a charter airway (KLM). Only had one slight delay in the last three months.
*often the train was also delayed, which will surprise nobody in the UK!