Flew BA from MAN to LHR a few weeks ago as I had a day long meeting in a hotel just off-airport. Stayed overnight the night before the meeting and was going to go back to T5 for a fairly long wait for the flight home when a colleague offered me a lift. I chose the lift, partly because I found the seats and leg room so uncomfortable compared to EZY, and I fly EZY at least four sectors per annum.
Next time I am taking the train and Heathrow Express. Not much cheaper but more comfortable and almost as convenient.