Well, I finally did it... I bought both of the DA* zoom lenses, so that I could cut down on the amount of lenses I bring in my back pack travelling.
I've only got pictures from the 50-135, and so far, the lens looks like a serious lens! I had an easy time doing post work, and applied NO SHARPENING to the photos, just the usual tweaking of colours that I always do. The lens is fantastic!
The 16-50 I've only taken two pictures with, as I opened it up 10 minutes ago. Both pictures appear to have serious purple fringing around the Pentax logo I took a picture of, AND the logo is out of focus in both shots. I might take it back, and try another one....
I won't post those photos just yet, as I want to play with it more and see if it was an isolated problem or not.
But, here's some shots I took with the 50-135: