I'm thinking of making a first time purchase on better insoles, and i'm between SP Blue and the Spenco total support insoles. I have normal to slightly low arches and after reading reviews, i'm really torn between what to choose. It seems like most of the forum swears by superfeet, but i'm scared that i'll waste $40 if they don't "mold" to my feet, which is apparently something the spenco total support can do (heat mold). Then again everyone seems to love superfeet... I guess if anyone could compare between the two or comment, it would be much appreciated.