Chrism8 wrote:
You wouldn't be disappointed with either, you've not mentioned what you prefer to shoot, but given you've had apsc and the lenses to match, I'd highly recommend a K3iii

Nigelk wrote:
It's an interesting debate and one that will continue for as long as there are different sensor sizes.
My take.....
All my digital cameras are APS-C. I mainly shoot with the compact KP which I really enjoy, a pleasure to have with me, over my shoulder all day.
As others here are I'm sure, I was a member of a very active camera club with approx. 60 members shooting all sorts of cameras from 4/3, APS-C, FF? and medium format. Looking at hundreds, probably thousands of images both printed at A3 and projected with a high quality high definition projector my take away was, as long as the author had captured an image well and processed the image with skill and knowledge never ever, ever could you tell what size sensor was used to capture the image, it just was never a deciding factor it what where the best images and what were the also rans. Far more important was the skill of the photographer, the light, the scene captured, the mood, the very essence of the image are far, far more important factors.
Now, I'm not denying that there are in certain circumstances technical image quality advantages to using larger sensor sizes in cameras. What I am saying is within most normal photography your unlikely to hit that buffer where the larger sensor would have saved an image or made it significantly better when viewed within normal parameters.
Me, I'm very happy staying smaller and lighter with great image quality, that for me is APS-C.
PS. Lens choice and settings make a bigger difference