Yep, I changed mine with Phillips Crystal but no real diff ! With the Cornering bulbs I don't think you can use LEDs....
On another note - I wanted to change my parker lights and the come home lights of the rear mirrors to LED however when I spoke with the VW Tech, he advised for the parkers the entire headlight needs to be removed and with the rear mirrors they had never done it before??? 
If anyone has done this please reply as for me it has been
!
BB R36 MY2010 Sedan ->Sunroof ->SatNav ->MDI ->DynaAudio -> LED Lights
RAY
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