Got my hids form Ddmtuning too. I went with 4500k. Its funny tho. I bought my set right before christmas at 140bucks. I check on new years and they were 70bucks. It was sad but i love my hids.
2 me 6000k is the perfect balance, a little hint of blue/purple to it to make it a little more attractive than 4500 or 5000k but, you still have white light lighting up the street.