I was testing a bunch of the 1gig miniSD cards. Kingston ones seems to be fakes. By far the most stable ones are from PNY. These PNY cards are made by TOSHIBA & it said Made In Japan for 512megs version & Made in Taiwan for 1gig version. Using Toshiba chipset it seems to be clocking about 150x, beats Transcend 80X hands down!!
The blue Sandisks are slow, Transcend is so so.. Ridata is quite fast too, Apacer is ok also. Dun even try MWalker/Silicon Power & other no brand. They are not worth it, it's slow & overheating problem that most have.
Since now the 1gig MiniSD u can get for RM110 for PNY 1gig, there is not point getting others.
By the way. There are more than 50% of Kingston or Sandisk Memory card being FAKE ones. Just beware. They are all over on ebay.