Mr A Tis
Older aircraft are more likely to have faults or problems than more modern aircraft, Jet2 in the low cost market have amongst the oldest and only bmibaby come close in terms of age of airframes, what I find surprising is that given the low utilisation of Jet2 fleet is the delays that they do get seem high compared with baby, it looks like the 757 are causing huge problems and of course if one goes tech you can hardly replace it with a 737, they have I understand an airbus subbed in for a couple of months to support the program, it also seems the 738 have had a few problems.
They do look after their customers and seldom cancel but if your going for a short break where a 4+ hour delay is going to eat into your weekend break, then put up with the FR abuse and book Ryanair