For our headlights definitely go with the 35 watt not the 55 watt. I just picked up the 55 watt 5,000k slim ballast from DDM for my driving lights and they are super bright. My shipping time was very fast. Probably 4-5 days and I'm across the country from them. I'm pretty picky about shipping and I felt that it was adequate. I had read where their shipping times were slow, but they get an A from me.

I would go with at least 5,000k. Maybe 6,000k.

As soon as my SilverStar Ultras burn out (going on two years I think) I'm going to pick up a 35w HID kit for my headlights. I'm not sure if I'll go with DDM again though. I think the VVME kit comes with these cut off brackets they help with glare a little. I was also a little turned off of DDM because one set of the wires doesn't have a plug, just male prongs. Not a huge deal though.

If you don't get the dual kit then you won't have a high beam. Some HID kits use a halogen bulb for the high beam so it is basically useless. And like 99Yota4 said, with some kits there isn't much difference in the low and high.

Overall I think the DDM kit is very good for the money. I wouldn't hesitate to buy from them again.