I had a pair of MBT shoes - very comfortable, but actually ended up causing me more problems than they solved
(I've injured one ankle more times than I care to remember now, including sprains, tendon/ligament snapping/damage, one possible break (never got it re x-rayed), and so on - it's permanently swollen these days - varies from hardly noticable to tennis ball or larger in there). For every day wear now I just stick with orthiotic insoles, and for walking I've got these - it really is like being barefoot!:
