Yeh it's an amazing camera - glad you like the shots. I felt a bit funny taking the shot of a homeless man but I saw him there walking up a back street and just had to grab it - hope he wasn't upset by it.
The new Canon and Nikon cameras are shooting up to 100,000 ISO - just crazy. I think ISO won't even matter in the future.
PS - Not sure how my thread got in this thread but have reposted. Hopefully in the right place this time.