Along comes a new shoe, you think to yourself, how good could it really be! REALLY GOOD, Newton's MV2, is lightweight, stable, flexible, and those lugs. If you have a 5k or 10k, I can't speak to anything above that, put these on, you will move. Not sure why but you just want to go faster, feel like you can go farther and just feel great the whole time, effortless.