The dubbing is mostly with the Windows Explorer (goes fastest with copy / paste), although I have also various mobile phone software, but that takes the handling aspect usually too long.
Both the "small" stick with 512MB, and the 2GB version did not let me down. On my system (Windows XP) there have been no problems, also unsubscribe the memory card is not necessary before removing the adapter.
Who counts on sufficient space, is right here from my experience. An even higher storage capacity is currently not necessary, although my MP3's are usually compressed with at least 192KB and at lower bit rates (eg, 128KB) even more titles would be stored.