you have to watch the compression on these, they offer a choice of quality levels and those with the most recording time are poor. The high quality recording setting cuts down the recording time accordingly. The only disadvanatge is really that your master is permanently compressed, so making a wave or cd out of it gains nothing in quality.

But they are very convenient, and remarkable for the size. Media is obviously more expensive than minidisk, but you get mixing, dsp, effects, drums, and with usb you do a few tracks then download to the pc, so do not need much media beyond one reasonably sized flash card.