I am getting an HTC Hero soon (the one from sprint in America not the European version) and I know that it uses a San-disk Micro SD Memory card, but I was wondering if it was compatible with any other memory cards? I have over 20 Gigs of music on itunes and a 16 GB memory card (max for Sandisk micro sd right now ) Isnt enough and I know other sized memory cards hold that much, any feedback would help thanks,