I just bought a Hanvon N516 (a couple of weeks ago) - it has 2,100 plus e-books pre-loaded... Again.. I can only read ONE book at a time, but it's nice to know that I got so much variety.
Compared to my palm, it's very slow starting up and turning the pages - I suppose it all takes the same time as a p-book... My palm is instant on and instant pageturn.
I'll continue to monitor the progress of the different devices, suitable for reading... If something turns up that I can't live without, I'll just have to buy it.