I swapped them with these from Super Bright LED's. I've used their stuff before, good products, fast shipping, great service.
I ordered 2 sets, one of the "natural" white and one of the "cool" white. The cool whites were bright as hell, but still had too much of a violet hue around the edges, like a 10000k HID look, which probably woulda gotten me pulled over, plus I just didn't think they matched well with my HID. The natural white is more like my 6000k HID's, they have a real pure white with just a hint of the rich purple around the edges at just the right angle. Great stuff.