Guys, i hav installed Philips Xtreme Power H4 in my Cultus. Its not wot i expected. Infact they are as good as Stock bulbs, nothing really great to write home about. I installed another in Prado, and the results are no different. Comparing wid HID, the difference is stil pretty large. This might not hold true for other cars as Cultus comes with best Stock projectors and lights amongst the lot in my opinion.
Its really hard to source them as i couldnt find them in Dubai even. And it may not be worth it.