I used to swear by Ecco until they appeared to change to cheaper manufacturing and got a bit plastic-y and less comfortable. I've worn Hotter now since their 'Shake' style got me walking around New York in comfort two days after being diagnosed with plantar fasciitis which was causing me lots of pain. Some of their styles have 'double' insoles for walking-on-air comfort. I only ever buy Hotter now but, unless I'm repeating a style I already have, I still try them before buying for width, although they do online sales and no quibble returns.