Just how comfortable are they? I need (and this is genuine need - my pair are letting in water 
) a new pair of hi-tops. I have flat Ash ones at the moment, but can't seem to find a pair in my size, at a discount, in stock anywhere (38, if anyone is good at seeking these things out). Could do with the heel height on my stumpy legs, but it will defeat the purpose if they are deeply uncomfortable.
TIA.