Multi-Purpose or Purpose-Built E-reading Devices?

Wattpad, the e-book social network, has just released its Q2 Metrics Report, which surveys trends in e-reading in terms of how they impact Wattpad.  Perhaps the most interesting and widely applicable finding in the report is the fact that users prefer multi-purpose devices to purpose-built e-readers.
According to Wattpad CTO, “Six to twelve months ago, people only thought about the major ereader offerings and the iPhone. But in the last quarter we’ve seen incredible growth in the usage of iPads and Android tablets, as well as netbooks and other mobile devices. I expect this trend to continue. EBooks that are only available on one device or in one format will be missing out on many fast growing segments of the market.”
Today, however, we published our very positive review of the new Kindle 3, which we called “the best E-Ink e-reader.”
So, at this point, what do you prefer for your e-reading–a dedicated e-reader or a multi-purpose device?