Anyone upgraded their non-zenon headlamp bubs?

[Trev450]

I'm considering upgrading the poor headlamp bulbs in my 987CS to one of the higher output versions such as these:

http://www.amazon.co.uk/Philips-0730220-12972-BVUS...

Anyone done it and is it worth it?

[Trev450]

Interesting info. Thanks everyone.