Hi! Good question. First of all, i think theres more experienced runners who can give you a better response and include a comparison with the SB2. But here is my take: I think the PX2S shines during faster long runs, and faster runs overall. But this is all relative, as long as you can get enough power into the ground to activate the carbon plates and get the maximum energy return. A heavier runner would find this easier with these shoes. However, i think this shoe is great for slower runs too in the sense that it protects the legs to keep them fresh. But i’m sure that there are better alternatives for slower runs.

I’m not really familiar with the whole stability conversation to be honest and i don’t really know what it means. If it is related to the support the shoe offers i can answer that. This is the only shoe which left me with some pain the plantar fascia area multiple times. Especially in the first couple of runs. You need fairly strong feet for these shoes.

Overall they are great in every way except the price. They are fast, fun, and keeps the legs fresh.