Puma Fast-R Nitro Elite 3

Have been doing research on this shoe for quite a while now. So far, it seems this shoe may be better suited for someone running much faster times than me, a little under sub 3 for the marathon, or shorter distances. Have also seen people love this shoe and swear by it, but again they seemed to be in the 2:15-2:30 marathon range. Before purchasing, I am looking for people in my marathon range 2:55-3:00 to give me their experience with the shoe. Thanks!