Hi Christian, you have named good reasons and it is your decision.
I'd like to add my two cents, concerning me to stay with Pentax: I have changed some of my gear in the last years, while I got some information from the list and while I got used to use eekbay. I had fun to try another lenses, to compare and to find the ones that I might like most. But recently I thought: three or four lenses and a reliable body could be enough to have a lot of fun and taking wonderful pictures. So I am on the way to forbear from buying new gadgets and take more photos instead. For the rest I second Markus - please show some photos with your new equipment, too. Best, Bernd
