Wow, thanks for all of the replies!
Doc - Yes, being in the part of Oregon that sees a lot of rain, weather resistance is extremely important to me in a camera. Just taking a walk is likely to see at least a drizzle by the end many times of the year, even if it is dry at the beginning. K30 vs. K5c is a tough choice.
John - Great suggestions! I've looked at the 01 as a compact option, especially attractive as it takes K-mount lenses, but the lack of viewfinder is really off-putting. I do not like looking at an LCD screen to frame my shot.
Do you know if the K30 is smaller than the K5? My understanding in the past has been that the Kx and K7, for example, shared the same basic body size, but the Kx was lighter and not as heavy.
calsan - I haven't really explored the Q, largely because I didn't think it took K-mount lenses...I might have to research it.
Everyone - It's looking strongly like the best fit for me will be selling my K-7 and getting a K5c - especially if the controls are largely the same, since I really like that layout. Thank you so much for the replies! I certainly have a lot to think about...