26er,
Vaguely remember doing a fortnight's gunnery from Stradishall with Spit XIVs about '51 (didn't hit much !) Was on attachment from 20 Sqn, Valley.
The tugs were Meteors (that would be your TT21, I assume). Wiki says the TT20s were RN, not RAF, and the TT21s went to the Danish Air Force. Better give Wiki the hard word !
As for the Meteor/Vampire comparison, it's a matter of choice. As I had very little on the Meteor and a lot more on the Vampire III and V, I suppose that that coloured my opinon. After all you could even work up an affection for the Vultee Vengeance (and that took some doing) after a few hundred hours on them.
Cheers, Danny.