Hi Neil,
Nice little forum you got here. I got the E450 if your still curious and am very happy with it even with me being a total SLR novice, the E520 should be just the ticket for an experienced photographer such as yourself but the E520 price is inflated right now. Even a used 520 is almost as much as a new one with a year or so wait halving current prices hopefully
Check the following link for some picture samples from legacy OM lenses, note the AF confirm adapter which has a small chip to communicate with the cam.
biofos.com: OM lens data sheets.
Theres a few digicams used but not specifically the E4xx or E5xx series though I imagine similiar results would be had with either though the pen tested above may be the closest. I did post a couple of pics in the gallery from my E450 as well though they lose a lot in compression unfortunately.
Happy reading
