Spyder is the best bet. They sell both LED and CCFl halo's. Make sure you buy the CCFL if you want them to be seen during daylight. I've had both pairs, and I have HID's in the high and low.
Mostly all Ram HID kits want you to only plug into the drivers side. **** that, I wired mine it to the wires directly, correctly, and have no lamp out. I have 35w low and 100w highs, both 6k. Be careful with the 100's, they will melt the housing if left on too long, but **** are they bright.
CCFL during daylight:

 

Spec-D looks good also and is not pricey. The Oracle headlights are a bit expensive but have good quality. They come with halo rings that are available in SMD, plasma and CCFL. Try Oracle Light - 4wheelonline.com to check the color options for the halo.