Flown FR over a dozen times and never had any major dramas yet.
Been stung for the excess baggage thing once, but it was in the small print and I was aware that it might be charged. (Wasn't charged on the outbound leg but was on the return so it felt nice to get £40 over on O'Leary after his comments about ATC.)
And the only other thing was a cabin crew guy trying to diddle us over the cost of the drinks that a group of thirsty ATC people had ordered on the way to Venice. He got pretty short shrift as the two things ATC are experts on are money and drink
We'll put it down to a genuine mistake
I'm quite happy to fly them when on leisure travel and I want to save a few £££ to spend at the other end. Their safety is not in question and the customer service is generally adequate for my expectations of a LoCO carrier.