fell in love with the elementary stem the moment i saw it online. bought a v1 and used it, bought a v2 when it came out just to put on a shelf, bought the v3 when it came out and swapped onto my bike. the v1 is now on the shelf just for me to look at. beautiful piece of engineering, not just from the functional perspective, but also how it's designed to make manufacturing it easily. if you video the manufacturing process it'd be like those industryporn vids.
oh, stuff i hate? a lot of products in BMX are still quite shit yet popular. its the idea of some younger kids thinking one part is superior than the next because of whoever pro is riding that brand, or buying into the gimmicky ideas that those companies sell that i hate. This hate, whilst mild, is more on a spiritual level than material.
EDIT: also KHE integrated stem and bars for street riding. on top of how it's a silly idea (which may have had a chance of being well excuted and can fit certain people), it's SO BADLY MADE.