These Illum Thong (flip-flop) shoes are really comfortable.  I haven't used the pedi-light yet, but I have played around with turning it on while in the house.  I have about 7 or 8 pairs of Teva flip-flops, among other makes and models, and I've found that Teva knows how to build a flip-flop that is extremely comfortable, almost to the point of feeling like you're not wearing shoes.  I really like the Teva brand.  The prices, well, I usually try to hit the sales.