I have used the spenco q factor insoles for a long time and I thought they were great. I just bought a new pair of shoes and thought I would get a new pair of the spenco q factors to put in them. then I found out that the q factors have been replaced. I was disappointed but reluctantly decided to give the new ones a try. These spencos are even better than the q factors. they have more cushioning and I like the heel cup a lot more,, it seems deeper or more cushiony or something but just better. the support is still there and they even feel more comfortable. I am sold, I just ordered two more pairs for my other shoes. good to see they are the same price, too. (Posted on 8/28/10)