After hours of reading about LEDs on various forums over the last couple of years I decided to go with these.
H4 Philips LED Headlight Review | H4 LED kit Review | 12953BWX2
So far I am very impressed. Almost no electrical draw (especially compared to the Sylvania Silverstar bulbs they replaced). I have the flat Hella Euro H4 housings in the car and theses plugged right in with plenty of room for all the bit and bobs. The cutoff patterns are as sharp as the halogens which was my biggest concern with LEDs. Philips really did their research on these as a true plug and play upgrade.