There are several threads here regarding HID kits, each with their own preferences. While I was visiting family out of state, I had HID's installed in my fogs, lows and highs and what a difference just the lows and fogs make! No need to install the highs, just keep them stock in my opinion.
Now, don't be afraid to spend some cash for a quality kit. It is not that hard to install, but there are a ton of "cheap" kits listed on the net. The guy I had install mine only charged me $300 for all three sets. I was intermittently losing both high and low driver's side lights after about 3 months, so I pulled them out and went with SilverStars until I can save up for new HID's. I really miss the HID’s. I still have the fogs and they really help allot, but the difference is night and day IMHO. The kits I pulled had capacitors added in to cancel any “vibration” or flicker, but still did not prevent the computer from cancelling them out.
I ended up having to take out the lows and highs as the installer did not use the appropriate kit. I took my RAM into a local professional installer who told me that the 2011 computer apparently requires the CAN-BUS ballast specifically programmed in order to keep the lights from cancelling out. His kit cost was $299 per set, where I paid that for all three… IMO I was taken for a ride the first time, but I at least learned how to install them myself and I can now make a better informed decision of which kit to purchase in the future.
Just my $.02…