Essentially, you don't want them. They are ineffective, unsafe, and illegal. There is no new "innovation" that invalidates that statement. See
here.
The stock reflectors are based on capturing the light from the single hotspot in the center of the filament, not from the
two hotspots formed at the electrodes in an HID capsule (with one hotspot being
behind the focal point, the other being
forward of it, when dealing with reflectors designed for an axial filament, such as designed for 9003, 9006, and 9005 bulbs). There is no way to aim them properly due to this. You'll see less well and you'll blind other drivers.
HIR2 and HIR bulbs are the way to go.
Candlepower, Inc is running a special on HIR2/HIR bulbs -- $100 for the complete set. This is going to be the best upgrade you can do. Barring that, you can use the Philips X-Treme Power 9006 for your low beams (and save doing the base modification).
Don't get anything that promises to be "whiter" or talks of high color temp or "HID look".