Heh, that's a fairly common first reaction to e-ink, DeathtoToasters, and my personal favorite. It's good news that the Borders folks know enough to answer that question now, they didn't used to.
Glad you've decided, the iLiad is a sweet device for those who want a bit more than just a reading device.

General consensus seems to be that the iLiad's display is about the same as the Vizplex that's in a PRS505, perhaps a tiny bit less bright. I haven't seen them side by side, so I can't say of my own knowledge.