I have always shopped at www.divineo.cn
I recently installed a white chip, and it was a pain in the ass. That is partly my fault though.
I couldn't find any information on flashing the chip. I was trying to flash the 1.2-1.5 bank so I could keep the other bank free. I found lots of information on the 3.0.3 flashbios bank, but very little about flashing the Cromwell bank. I could easily install and flash one of these chips now.
Preference: Blue Chips. They come preflashed and ready to go. All you have to do is put a dash on the c: drive. If you are planning on installing your dash somewhere else, say the f: drive, then I would get the white chip. You are going to have to reflash the chip anyway, why not do it during the install.
My $.02
Megahurt