That's all you really need. I tried both the 8500 and 7500, and couldn't tell the difference. The 8500s had a better housing, but burned out quickly, but $20 a year is not bad. I have the 7500s now, and so far so good. Both look as bright as stock, which is plenty bright for me (they're DRLs not headlights
), but obviously with the outer rings dimmer. I like it that way.