The only beef I have with the Flex box is that it comes with the voice remote. The directional buttons (itty bitty wedges of rubber spaced quite widely apart, actually) and I just don't get along. The transport buttons aren't where I like them either but that's probably just me.
My X1 was just updated and I too dislike the tiny directional buttons. Have you checked to see if any of the older remotes will work?