I'm thinking about buying a Duo 280c as a cheap, lightweight machine for the road. One thing I'm wary of though, is the keyboard. From what I've read, it sounds like either the feel is compromised, and/or they are prone to failure. Is this true? Also, what sort of battery life can I expect? Is it possible to re-cell them? One other thing I've been reading about is the tendency of Duo screens to start going dark around the edges with age. If I was to buy a 280c, what would be my chances of running into this problem down the road? I'm sort of tossing between the 280c and a 540c... Cheers, Adam.