Pete - the Sony software is ok, but Lightroom would blow you away. I've been usig it for about a month or so now and it's so much easier to use and you can do loads more with it. Image processing is so eay and quick. It does eat up your memory though, I've just been out and bought a new PC as the old was dying trying to run it! You would also still need Photoshop or Elements alongside of it, as there's certain things you can't do in Lightroom.
Gary ...