I put a DDM Tuning single HID bulb. It's a 55 watt ballast with 4500K temperature for a pure white light with none of that blue nonsense. I put it in the stock headlight (not high beam) and it works very well. Light output is dramatically better and there is no glare thrown at oncoming traffic. The light beam is still flat and level. Been using it at night for several weeks now and I haven't been flashed nor have I seen the light brightening anybody's face.
Not sure if earlier years have different headlight designs, but the 2012 V seems to be perfectly fine with HIDs in the stock housing, something that normally I would be very firmly against.
2012 Kawasaki Versys 650 - 20,500 miles
2000 Volvo V70XC 2.4T - 258,000 miles