Flight crew I cant comment on, however any time Ive flown Ryanair, Ive always found the flight crew excellent and well presented.
On the subject of cabin crew, I have known many a Ryanair f/a who at the best of times do 10hr day without a break. Im sure this was an isolated incident, because 100% of the time I fly with FR i have always found the FAs to be more friendly, professional, easy to talk to, able to handle a lot more crap than those within the national airline.
So I raise my hand in the air and say that I think Ryanair F/As are probably the best in the business in Europe, and would fly with them any day, (if the flights were on time)