I've been through the whole range (!) of bulb options on mine.
My issue was that, with ageing eyeballs, dipped beam illumination around the rural lanes that I mainly use, just didn't seem to have the throw that I wanted.
I upgraded to Nightbreakers, which were better, but I still wanted more from the lights, whilst still being MOT compliant and having a tightly controlled beam as I didn't want to annoy other road users.
After a lot of research I found these:
http://www.powerfuluk.com/vehicles/...adlight-bulbs-range-rover-p38-white-pair.html (out of stock at the moment)
They have the means to be focused to avoid scatter and don't upset the BECM. Also they don't have fans to fail, which cheaper ones have. Took a bit of twiddling to get the cut-off nice and sharp followed by a visit to my local friendly MOT garage to get the beams properly aligned.
End result- bright crisp white light, greater range (extra 15m or so) and spread to the left. In a dusk convoy recently with other P38s it was mentioned that my lights were a much brighter white than the standard ones, but didn't dazzle or irritate when I followed people.
Worth £70? To me, yes. Recommended? Yes.
Can't emphasise enough the need to budget to get them properly set up though. With power comes responsibility!
