I've just upgraded mine. I purchased the ones below as I found they're alot better than the ones in the kits.
I bought three sets of these (
http://goo.gl/LG0W1P). Two for the front interior lights, three for the rear and one spare. These are VERY bright and quite hard to look at straight on.
I then bought 2 sets of these (
http://goo.gl/YU6yI4). One set for the side lights and the other for the footwell lights as these also need the resistor "canbus error free" ones same as the sidelights. Also if you have access to VCDS turn them up to 100% and they are set to ~70% by default.
The only ones I forgot to buy were the ones for the sun visor, which I will be ordering soon.
Excuse the dirty looking windows.