Even SanDisk on thier website for compatibility with the BlackBerry 8800 only lists a max of 4GB MicroSDHC. If the 6GB and 8GB were truely compatible, I'm sure they would have listed it. Besides, I don't think its a goof on thier part if the T-Mobile Wing and HTC Tilt are listed as supporting the 6/8GB MicroSDHCs.