Well I flew United recently & in general found them okay. Being interested in aviation & chatty in disposition I've a habit of sometimes asking other people what airline they used & how they found them. I was surprised when a British couple told me they flew BA & one pax was allowed to destroy their whole flight for them without intervention or chastisement from the cabin crew. One, he stripped down to the waist, two, he was loud & using vulgar language, can't remember whether they said he was inebricated or not but giving the rest of behaviour it's not unlikely he was. I was surprised in this day & age post 9/11 that a pax could get away with such disruptive behaviour on an aircraft. I can guarantee you if I'd been on board, his ignorant behaviour would not have been let away with for long as one UAL pax found out very quickly.