I was one of the people who got energy boosts on sale, and I've ran in them a few times now, and for the most part, I really enjoy them. My one problem is that the TPU shank plate they used is annoyingly enormous, and completely useless. Seeing how the thing is on the bottom of the boost, and how much boost moves, the thing is next to no good at giving me arch support. Evidently this was rectified in the ultra boost, there the shank is directly below foot. What also angers me about the shank is that it is full length, and gives the toe a strange flared up shape that all boost shoes seem to have. The difference is that this extended shank doesn't allow the shoe bend down to a normal shape when I'm actually wearing them, it feels like I'm wearing elf shoes , I'd prefer the added flexibility that removing this would bring.
Also, maybe someone knows, what purpose does having a TPU piece on the inside rear of the boost serve? The one that is seen on the EB and UB, and from what I can tell only serves to limit the compression of the boost in this region?
I probably sound like a crazy hater, but other than my issues with the shank, i really like my EBs. The boost is as nice as I excepted, and the upper gives me a nice secure fit, with no heel slippage.