I tried the sync cable on my evo, set mass storage but could not locate the evo files on the acer, interesting, will have to research that issue. But I have been using Bluetooth file transfer very successfully. Have the same app installed on the phone and the tablet and its quick and easy. I have a folder on both the phone and the tablet where I store my own files, each is named either blah blah evo or blah blah acer so I know at a glance with operating system I'm looking at, the evo or the acer, because both systems have the exact same files and file names, saves any confusion.
Larger files do take longer to transfer via bluetooth compared with a direct cable transfer I would imagine. I wonder if there is an app out there that would allow cable transfer on the acer? Will have to look.