The Good: don't let the price fool you, very solid cranks. zero problems, zero squeaks, tight !
The Bad: can't think of anything bad
I messed up the threads of my old cranks, and where I was at, only united value cranks were available. I was desperate to ride, I had no choice.
Few months later, never once I have to tighten the cranks arms. No squeaky sound, very solid. I'm thoroughly surprised. When I try my friends' bike, I often hear sounds, and some gets loose easily, not this united.