Sandisk is good. I currently use a 2GB Sandisk memory taken from my old N97 mini and it still works great! Planning to get a bigger one soon. Even if you see a Kingston brand, that one isn't that bad either ;)
sandisk is okay but i have bad experience with it when i was an android believer. Games load up pretty sluggish but i guess it has to do with the OS as well. Windows store games in the internal so it should have no problem.
i currently use samsung 4GB and it is flawless, you need to consider the sd class as well. The higher, the better, and more expensive.