I can echo the sentiments on the Q400, think I flew to Glasgow four times on them, didn't make it back on time once, on two occasions the aircraft went tech, and ended up being delayed 2-3hrs.
Another time, aircraft went tech, the flight was cancelled, and all the passengers booted onto the later flight, which was upgraded to an Embraer, which was lovely in comparisons, greats seats and legroom!
The third time admittedly was not the aircrafts fault, was when the private aircraft hit the ILS transmitter at BHX, ended up on baby to EMA.