I had a K10d for 3 years now. I guess it is due for an upgrade.
With the K5, I wouldn't anymore have to worry about
: inaccurate metering (with and w/o hot shoe flash), slow AF, AF not locking in low light, noisy high ISO, no very high ISO - 3200/6400, back/front focusing lenses, unstable adjustment dials, low res LCD and less than 100% viewfinder. These are the not so few issues I had to contend with the K10D
. I couldn't imagine the relief I would feel once I get my hands on the K5. Whether the wife agrees it or not, the K5 is mine!