Got a question: I'm not planning to buy JDM Halo lights but If I was to they are lighted by H1-H4 bulbs right? Well, what exactly is the difference, in terms of light output, between an H1 bulb and say a Sylvania Silverstar?

I just put a set of Silverstars in my car and they are 9003 but I saw a set of 9007 lightbulbs at the store. I was wondering which one had the higher temp/light output. 9003 or 9007? Thanks---