I buy custom-made flying boots from Conker shoes in Totnes. You can have them in whatever colour you like, and with a choice of soles.
Light, comfortable, beautifully soft leather, great for driving and perfectly ok for normal use too so you don't have to change when you get somewhere.
They'll make them to a standard size, or just draw round your feet and send them a template.
Best of all is the price: £210 a pair.