i have a bi-xenon kit as well. when you turn the highs on it is like removing the reflective part from a flashlight and just using the bulb as light. brighter with a wider angle? yup. is it useable in any way? i can sure see the leaves on the trees above me, but the road is not all that good. i usually turn them back to the low beams and they work better.
do they work? yes. do they work well. no.