Hello PotN, I'm sure this topic has been covered before so I hope you don't mind the question.
Recently upgraded from a Nikon D3000 to a D5600. Loving the change so far! I've gotten into bird photography (from smaller black-capped chickadees/tufted titmice to flying bald eagles/osprey with a fresh catch) and picked up a Sigma 150-600. I'm really enjoying my results so far. Of course, like most of us here, I've caught the upgrade bug and I'm wondering if a Nikon 300 f4 with a teleconverter (or by itself, if we're talking 300mm) will give me clearer photos and smoother bokeh. Most important to me are sharpness and bokeh. Which do you think will result in the most "keepers"? Maybe I should just stick with the 150-600? I'm certainly nowhere near "mastering" it. I have a lot to learn.
Thank you in advance!