Transcend 16GB Class 6 SDHC card arrived today. I haven't heard word yet of anyone using cards larger than 8gb in the R-09 so here's an initial report:
Inserted card, turned on recorder. Boots fine. Check card info menu - reports 14.95gb.
Enter record pause mode (24/28) - display indicates 07:12:19 remaining.
Short test recording - works fine.
Format card in recorder - successful, card info reports 14.95gb.
Running a test recording now with the default 2gb file split limit selected to see what happens at 8gb / 7hrs 13min.
Stay tuned