Started using the following in the last few weeks to go with a bunch of m3i0s I'm passing out for xmas
16G kingston class 2: Me
2x 8G kingston class 4: Brother and Old Friend
2x 4G Kingston class 4: Wife and Daughter
2G sandisk class 2 : Son (this was not a recent purchase, wife had it laying around from when she got a new phone)
The sandisk is a bit flaky (has to be reseated alot), the kingstons all are sweet and smooth so far.