I must confess I hadn't considered mirrorless and have done a bit of research since your suggestion. I like the fact they are smaller obviously and reviews seem to indicate image quality pretty much matches DSLR's. I know they have an EVF rather than OVF but I've read about the EVF's and that hasn't put me off the idea of mirrorless, and I know I would need to charge extra batteries to take out with me as battery life isn't great but could live with that too.
However, because I photograph animals,
I cant really get away with any less zoom than I can get on the Nikon D3200 55-300mm lens. (I know we are in a thread about Bokeh but Zoom is also important to me too.)
I've had a look at the lenses compatible with say the Sony A6000 mirrorless but most seem to only go up to around 200mm (£279 at Jessops, £150 used from
mpb)
Sony do do a lens that goes up to 300mm but its over £1199 in Jessops (£860 used from
mpb), I was hoping they did a 300mm lens which was a bit more affordable and for this reason unfortunately I think mirrorless will be unsuitable for me. Shame because the reviews seem rather good of mirrorless from the bit of research I've done.