The STF-2 would probably be the best option among those you listed.
That being said for that size room I would be looking at the PSA XV15, SVS PB-2000, or HSU VTF-3. Those options should handle that room size fairly well.
That being said for that size room I would be looking at the PSA XV15, SVS PB-2000, or HSU VTF-3. Those options should handle that room size fairly well.