HID vs. stock

Is HID systems really worth the money??? I know that you can run the bluer and purple lights with them. On another note does anyone have any suggestions for where to get the bluest headlights for a stock setup??? I cant seem to find any that are even close to blue, I have a 2002 civic that runs 60/55 W, that reminds me of another question can i run more wattage than that or is that as good as it gets???
sorry for all the different questions
and thank you