So far I can gather the cards that are not correctly working, as in you can get them to recognize and sync initially but once you power down the phone and bring it back up everything is gone and the phone only reads "15mb" of storage space. Only way to get it working correctly again is a full hard reset / format.
Transcend - Works but has the listed issue above (I have a 8gb class 6, back to amazon it goes)
A-Data - Works but has the listed issue above
Kingston - Works but has the listed issue above
SanDisk - Works 100% reboots and all no issues (friend has a 32gb class 2, no issues at all!)
Hope that helps