Iv never tried powerstep insoels before but I have tried superfeet and in my opinion they didnt support my arches enough and were quite flimsy. Also quite over priced have seen some insoles 3x less which have the same features and support for far less (probabaly made in the same chinese factory)… sometimes with these brands your just paying for the name. I actually found that these insoles are just as good as my superfeet ones if not better and cost a lot less
http://shoewawa.com/product/footreviver-arch-support-insoles/