I put the Halfords 90% brighter ones in, they were £21 for two, and I am amazed at the difference.
First car without xenons for about 5 years and it was a shock going back to halogens again, was going to put projectors and HIDs in, but after putting the halfords bulbs in and uses some Meguiars scratch X on the lens of the lights, they are superb and no need.
I also adjusted the lights slightly so the left hand one shone a little further down the road, but don't go to much as you don't want to dazzle anyone.
I'm sure the ones online may have a slight edge, but if you want a convenient upgrade Halfords is handy.