Quote Originally Posted by curious aardvark View Post
the other option I really like is flex3drive: http://mutley3d.com/Flex3Drive/

I'm surprised that you aren't seeing the manufacturers using this type setup on all bowden setups. Gives you the best of both worlds. Lightness of a bowden extruder and the control of a direct drive.
Flex3Drive has been out for a long time now (long in the electronics world) and over on the RepRap forums they had a discussion about it and it is not without issues. From what I gathered it is better to just go with a Bowden due to the cabling and some other things. Been a while since I read that thread, or even heard of this product being mentioned, so go grab a look over on the RepRap forums to see what is good, and bad, with its design.