Warning. We have found some compatibility issues with Swissbit cards, so we do not recommend them. It is not know where the incompatibilities arise, but since all other cards tested seem to work OK, we have our suspicions. Are you able to provide any more information? Product / model numbers of the...

If you're very serious, there's Swissbit, which still produces SLC cards. 8GB for $134. Do you remember FusionIO PCI-e cards? This is orders of magnitude above any other competitor that I have seen.