[gTen]

I dont think there is a class 10 32gb microsd card...the highest one is 32gb class 4

Anyways, the class thing only shows you the minimum speed of the card once it fragmented..aka you can have a class 2 card go on par with a class 10 or even outpace a class 10..once the card begins to fragment it will begin to slow down..the class 2 means it will slow down to no less then 2mb a sec...but it can still be on par with other cards..it just guarantees a minimum...if you format the card and reinstall the data it will be back up to speed.

As for which brand..its a bit tricky as a lot of the cards are made by the same people...you may get a few mb maximum read or write from one over the other but I don't think it makes too much of a difference for cellphone usage. The thing to look out for is fakes..