Having operated both types, each has advantages in differing scenarios. With a short transit the VC10 is ideal with a reasonable give and quick receiver throughput.However with a long transit time the tristar is the only tanker with a meaningful give! The VC10 has two other major problems, firstly the huge noise footprint which has become unacceptable at many civilian run international airfields e.g recent campaign and secondly the unreliability of the fleet due to it's age.. .. .Finally it is not the aircraft type that makes a premier squadron it's the people on the squadron. From my experience there are quality people on all 3 Squadrons.