I am a bit of a gear snob, I confess. But this fairly expensive lens (for micro four thirds lenses) is really fantastic. Unbelievably well built, good size, great bokeh, fast and sharp. Is this system "as good as" FF? Who knows and who cares. With lenses like this it's a great system that doesn't break the bank or the back.
Crisp yet not harsh image quality. Great for low light, stop action and image isolation (shallow depth of field/portrait). A joy to use with rewarding results.