Particularly in Europe it often makes little difference whether you fly by "full service " or " low cost " carrier as they both have the same handling agent. The checkin queues for the low costs tend to move faster as the transactions are simpler and do not involve multi sector through checkins. On the spot supervision by the legacy carriers is often non existent and the low costs tend to be faster on the turnaround because their crews are more pro-active in chasing up the handling agent and of course cabin crew do the cabin cleaning themselves.