In a year of printing and maybe 10kg of filament, I haven't had a jam yet with my three hexagons. What I do wish for is better ooze control. In a dual extruder setup, it's very difficult to prevent ooze from the non-printing nozzle--especially with long layer times, models that leave one extruder idle for many layers and specialty filaments like NinjaFlex.

Is the E3Dv6 better than the Hexagon in this respect, or is it just a feed/jam improvement?