The different Sheevas on offer

Hi,

I believe I have this right, but I want to confirm it before I make a purchase. Are all the Sheeva plugs for sale exactly the same unit (with the exception of eSATA), and the difference is how the software has been configured on it?

If this is the case, I think I'm better off buying the cheapest one and using it as a learning experience to get it to a ubifs formatted, dual boot configuration.

If I go down this route, is it easy to restore it to factory settings (i.e. the default Ubuntu config) should i screw it up?

Look forward to your replies and look forward to being a sheeva user soon!

Chris