I love the E30 after starting (with DSLR's) on the E410, then E520 (because my son got the E410) & now the E30. There are a lot of features & improvement in IQ. Where you would take the auto ISO up to 400 in the E410/520, the E30 would be normally set to go up to ISO 800, but ISO 1600 is still quite usable (but not while using auto gradation as well) & ISO 3200 is OK if there isn't too much dark area & can be cleaned up quite well in Noise Ninja or Neat Image. I also like the ZD 14-54 II lens with aperture being f2.8-3.5. It performs really well. BTW, there are some excellent deals going for the E30/ZD14-54 II outfit right now at http://www.digitalcamerawarehouse.com.au/prod2406.htm for $1399.00, what a bargain!
A friend of mine bought his last week & they have dropped the price now by $160 down to $1399. He would be peeved if he knew that.
Pros: Stacks of features, including larger viewer, flipout articulating screen, many dedicated buttons, top LCD display, inbuilt level, ISO 100 - 3200, I could keep on going. Check Wrotniaks site too. http://www.wrotniak.net/photo/43/e30-rev.html
Cons: Heavier than the E500 series, not as clean in high ISO as some other cameras, but still good, a bit slow to focus in live view (but if used for appropriate use, who cares).
Checkout DP Review for an indepth review & many others (but some do have a Canikon bias in their thinking).
Hope that helps,
Ross