In reply to Jenny Monkey:
heres my 2 pence. if the shoes are too big, your foot will have to work harder to stand on small edges. this means your plantar fascia will be put under greater strain. so go for something tight that will stretch ( i.e. not sythetic) and something stiff (i prefer miura lace) the high instep thing could be awkward, velcro could be a good option.