I have been running the A-Data 16GB card for 2 months now as well.
It will run 2 Track 24/96 fine without issue don't know about 24/192 or 4-track 24/96. I would think you could get away with 24/48 4-track though.
I could not get it to run longer than 20 minutes running 24/96 with FLAC encoding enabled though (Badger firmware).
24/48 worked fine with FLAC encoding (Badger Firmware).
From others input you will need to re-format any time you are cleaning up the card in order to keep the file blocks in alignment. Flash media doesn't write as well as Hard disks with random writes (i.e. you erase a file in the middle of the flash).