Glad you are loving your k3! I'm loving mine too.
Not giving away my DX yet though, because I read a lot of PDFs for work, that just aren't legible on the K3. Looking forward to the day when those read well on the smaller screen too.
Whenever someone looks over my shoulder and says, "But the screen is so small," I usually point out that it's the size of a paperback. If that's not convincing, then the ability to adjust the print size usually is!