Ok, I've ordered some parts from bimmian.com, including a set of Xenesis Tru-Match (white) 9006 bulbs for my fogs. I haven't given up on the yellow ideas yet, since I can get yellow bulbs at Eneos.
Decided to try out the whites after noticing in recent heavy rain episodes, the headlights from other cars are still quite visible (including xenons). So decided to go for the option of brightening up my view of the road instead. If this doesn't work out to my satisfaction, then I may consider going for the yellows or other bright halogens. Luckily the Xenesis bulbs cost around RM120/pair so if its a wasted investment, then it won't hurt so badly.
I am getting bimmian to ship the items to Singapore (cheaper shipping vs Malaysia, by a huge amount), so I do have to pay the 7% GST but won't have to worry about import taxes.
On that note, anyone know where I can find Osram Nightbreakers or Philips Xtremepower bulbs? I keep reading on how they are very bright (at the expense of a shorter lifespan, about 40% of the life of normal bulbs). A shorter lifespan for my fogs or high-beams is acceptable as they are usually off most of the time.
Also, does anyone know if it's worth the effort to change our high beam bulbs (H7 55W) to something brighter/whiter? Our high beam halogens look like the same colour as our fogs and while it does the job, I notice it is not as bright as our Xenon low beams (especially obvious on super dark roads like Simpang Pulai to Brinchang at night). If I do change the high beam lights, I am sticking to halogens due to the faster response time and the repeated on/off usage (flashing, and when dipping due to oncoming traffic).