I've used the Heli bars and the VFR bars. I honestly think that the Heli bars were a bit more comfortable because they are wider but, I have better low speed control with the VFR bars because they are narrower. The quality and finish on the VFR bars is nowhere as nice as the OEM XX bars but they do look more stock than the Heli bars.
For longer distance highway rides, I'd want the Heli bars. For riding around town and teaching ERC classes, I'd want the VFR bars.