My observation on stagecoach is based on my own experience. Often they're inconsistent in time, drivers are more bad than good, although they're one of the few operators to add nice padding on seats (Except on E400 wheelarch seats.
), but I prefer the old Go-Ahead ones. It is quite strange that Go-Ahead is so poor with their trains, but again, in my experience, one of the best bus operators in my area.