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The oem front sidelights on the Mk5 GTI are abysmally weak. Why are you saying no to LED bulbs?
Well the non error ones, I'm game to try, as long as they're bright.
Its just with all of the ones I've had in the past in various cars (probably 5/6 sets in total) they always burn out after around 2 months.
Wheres best to get a LED version of the sidelight bulb?
EBay is as good as anywhere mate. The only good set I had from there (reliability wise) were from there for about £11, but they weren't bright enough for the Xenon DRLs (I know you've got Xenons so might not serve much purpose for you either...)