I bought a pair of Skechers and I love them.  I have worn orthodics for years and I wear nothing inside these shoes.  They do change your balance a little but once you get used to them they feel great.  I never had any kind of muscle soreness from wearing them.  I wear them whenever I can.  I have a black pair and a white pair so that I can wear them as much as possible.  I have a soreness on my left foot on the bottom and I have seen two doctors and they did nothing that helped.  These shoes are so comfortable I hardly notice it anymore. I highly recommend these shoes!