[9relude8]

I am currently very new to Audi and and been looking into buying a 2006 Audi A4 S-Line 2.0T and was wondering if I can get any inpunt from you all to help me decide if I should go about getting this car or not. This car looks and drives very nice and would be a def buy except for the fact that it does not have Xenon headlights. Is retrofitting possible with the audi dealership? if so how much do they cost if anyone has done this. The reason is I do not want to void the warranty. The Second issue is I feel alot of viberation when idle in this vehicle but when moving it is smooth as butter. Is this small but rappid vibration normal while idle? anyone experience this? I would really appreciate anyone who gives me their input.

thanks ;o