I'm a 214lbs or 96.5 kg overpronator who lands first on lateral side. If I'm not carefull and running too fast too much I can get posterium shin splints, specially on the left side. I use the blue superfeet insoles and 9.5 2E shoes. I had the 1224 in 10 2E and I think I would order the 9.5 in 4E next time. I could not use the 1225 because they were not stable enough. I freaking love the 1224. Ran last night at a hard pace in the winter cold(Iceland) in the snow and it felt like runinig on clouds. Graet stable shoes, could use a little more cushioning but it is still good. I've tried the 859 and 850. The 850 is no good for heavy runners and the 859 in okay on short fast runs if I use extra gel insoles. But the 1224 are great for me knees. I'm sorry for any bad grammers.