Have you found any pads which don't squeal at low speed Nick? I have the same issue and it drives me nuts. Only way to stop it is to stand it on its nose which does cause a lot of squealing noises behind me instead.
I messaged Nick re. my experience with pads on the Aero.Mine had new pads on when purchased but they squealed very badly.
From memory, I got EBC Red Stuff pads.The Ref. was DP3036C,2000-2004 Yr. - they were approx. £90 plus.
I think the
'feel' of the brakes was improved, albeit not massively.The noise was certainly a lot less! A side benefit was that there is now hardly ever any brake dust on the wheels.....
James