Its the H4 bulb, i would just take it in and compare. I think you mean the HID bulbs in the first post taht are 150? i hear good things about the silverstars. I have always used Nokya's artic purple. pretty nice lights for sure. Have one in my yamaha virago and one in my cbr.

 

i run the silverstars...much improved lighting as compared to the regular stock bulbs