I have an Olympus E-510 and indeed it's a great camera:-
- Very sharp for kit lens range (sharper when compared to friend's Canon kit lenses - not L lenses)
- Built-in body anti-shake (lower cost when buying 3rd party Sigma lenses)
- Very light & compact, even with lens
- Like the 2x crop factor (don't need big lenses for telephoto everything is 2x)
- Good anti-dust removal
- Liveview (with boost for low light)
- Good low light shots till ISO800, above that still bearable (depending on size) due to the new sensor in E510
Cons - known problem slow shutter speed especially dark skies will need to be more than 4s before NR will be applied - else will suffer star like effect. To consider if taking lots of night sky shots.
Jeffrey