Well, I decided to make the jump to the E3Dv6 hot-end solution in addition to the Bondtech extruder. My primary reasoning was because I need to have a higher degree of reliability printing nylons (Taulman 618 bridge, 910, BluPrint) as well as semiflex Ninjaflex type filaments. While I use Hatchbox filaments primarily for everyday PLA, those specific types noted above were important to me and were the main reason for the purchase. Mike Giraud had successfully created a mount for the Robo to support Martin Bondeau's Bontech extruder (v2). Martin was more than kind enough to offer to print it for me (PetG) because I did not have a mounting option that worked with the quick-release R1+ I owned since the beginning of Sept 2015. The extruder is awesome on its' own, but let me tell you, the mounting plate is very well done! The side bar has 2 screws that you remove to set up your hot-end, and once you mount it to your carriage using M4-70x screws underneath and directly into fittings on the mount, you're in business. If you get the Bondtech, I suggest that you use (2) M4-70x 1/2" length screws with a single split lock washer.on each screw This actually creates a perfect fit and allows room for an extra 1/4 turn if need be. The only drawback I found was that the supplied stepper cable was actually 12" too short, so I built a longer one and ran it through the cable conduit wrap. One thing I did that I didn't realize until the cover was already screwed on was that I reversed the stepper polarity by the connector on the board, so it was in fact attempting to retract instead of extrude. Once that was adjusted, it's been screaming print heaven easily at 60mm, including my Taulman nylons.