I have Quills book, and it is very good indeed.
And, I'd love to have Gabby's book.
Now, more anecdotes.
Harry Broadhurst said the Mk IX on +25 boost was the best. Incredibly agile.
T.E.Jonsson flew the Mustang III, - diving with the 109's and 190's, no problem. And running with them, no problem. Turning, no problem either, - he actually mentions the 190 as the more dangerous in the close. But, he complains about the armament, 4x .50 which he found to be inferior to 2xhizooka + 4x.303.
And, what probably bothered Lacey was that the Mk XIV accelerates quite fast in the dive, a lot of difference from the IX, say alone the V or I.
I've seen a Griffon Spit doing endless looping sequences, the shape of "O" basically. Bloody amazing, probably the best of stunts I've seen, since the guy was practically licking the ground at very high speed, again and again and again...
The elevator authority plus the stall characteristics seemed to be completely superb.
BTW, I have a book by one of Quill's boys, Tony Bartley, sqn ldr 111 amongst others. Quite a tale. A lot of it is in a diary form.
Rather a rare one I belive.