The good news is any of the 16mpx or higher m43 cameras should outperform your D300, so it'll be easy to upgrade cameras.Well I still shoot my Nikon D300s, usually a mix of subjects - landscape, family events kids (6 & 8) sports and when I go hiking I was looking at the E M1, but the E M5ii seems interesting too. I have not looked at the Panasonic bodies yet though.
Thanks for the welcome!
I plan on keeping it, so open to suggestions as I have been getting so far. Sadly the prices in Canada are not quite as appealing at times.Are you planning on adding m4/3 to your D300s or replacing it? The D300s (with the 51 point phase AF) is still a very capable body for sports and action. So you might want to start small.