I happened across a K4N in Staples today, the first one I've seen on display. Nice.
Short answer: I'd buy one if I didn't already have a K3 (or KK, to be au courant).
Long answer: Good screen, well-placed controls for one-handed use, and small size/light weight make this one the next gen winner Kindle, IMO. Add in the bargain basement price and I suspect Amazon will sell these things like bottled water in the desert.
Side note. I've also looked at the KF a couple of times. Pretty colors. That's about it, pretty colors. I had a Nook Color and returned it after 13 days. The KF looks to me like just another NC. From the reviews I've read, I'd likely enjoy the KF less than the NC. And no, I'm not against LCDs and touch-screens, I've used smartphones and PDAs for well over a decade, and like them just fine. Sometimes, you need a Phillips head screwdriver, and sometimes you need a Leatherman. Neither is superior to the other, they're too different.
Regards,
Jack Tingle
For first look at K4T, see:
https://www.mobileread.com/forums/sho...d.php?t=159543