Ryanair - never again
Flew with them from Liverpool to Spain on my own with 2 DCs who were 6 and 4 at the time.
Paid for priority boarding along with another lone woman with two toddlers in a double buggy.
the "priority" boarding consisted of a 30 second head start in the headlong dash along the tarmac to the plane. I had to tell the DCs to run for their lives!
Luckily as the DCs are very athletic we managed to beat the crowd to the plane.
Poor woman with buggy was shoved aside in the rush and was further held up as she had to stop at the bottom of the stairs to hand over her buggy. Ended up being the last on.
I saw the problems the poor woman was having and, being one of the first on, I plonked bags on a bank of 3 seats for her. You would not believe the threats I got from groups of able bodied adults screaming "you can't save seats you ing b!"
Good thing I am tough as no way was I letting two toddlers sit on their own - especially as their mum had paid for priority.
Stewardesses were conspicious by their absence throughout, needless to say.
I can honestly say I have never met such a bunch of savages as that group of passengers in my life.
Always fly Easyjet now - pretty much the same price and definitely not the same level of aggression from passengers. Stewardesses much more helpful as well.