Get rid of the K10D.... Getting used to the K-5 will require this. Because of the control layout, particularly
if you are used to working quickly with the camera at eye-level.
I had a K20D and went to the K-7 which is the same external change as K10D to K-5 and it drove
me crazy. I was planning to use the K20D as backup but instead got a second K-7. Now I have the
K-5 and K-7 but those work the same way.
Your K-5 may have come with different defaults than your K10D. Both have customizable control-dials,
so use the menu to set them to your liking. After that you can get the dials for Aperture, ISO and shutter-
speed to work identically on both. You cannot use the menu system to move the EC button though
Have fun with your new camera!
- Itai