Here is a test image, taken handheld yesterday in a shady tree, as you can see, the bird was well buried in the foliage and getting a sharp shot with wind blowing leaves in front of it was the first challenge for AF (and my timing). PP examination of focus point placement shows it to be on beak tip, not quite what I was aiming for, but OK.
Nikon D5000 at 800iso, 1/1500 + Nikon 70-300mm at 300mm, wide open at f5.6
Aperture priority, using +1.5 stops EC override on the centre weighted metering.
All pictures have had minimal ACR processing; no NR, no sharpening (small ACR Recovery of 10 was applied).
The full frame shot was reduced to 700px width to display here.
OK, it's not a perfect lens, but for a little over £417 and weighing in at about 700g, I'm happy - and it's Nikon, so all the controls work exactly as my other two lenses, so "intuitive use" should come quicker to me.
Thanks for looking/listening,