I'm down to one. The older "bought because they were super cheap and my roommate was sort of interested in ereading" models are gone. My K3 now belongs to my roommate, but I don't think he's picked it up since he got his iPhone. I use my Sony T1 exclusively these days.
I have a tablet, but I only read magazines and reference PDFs on that, though I have some "emergency reading material" on it, just in case. It's just too hard for me to read on the backlit screen for any length of time.