7D or 5Dmkii - with a twist
Based on your description, 5D2 is what fits you much better, much better IQ especially in shadow and high ISO, better choice of FF lenses especially UWA, fisheye and TS-E lenses. 7D has the same sensor as in 550D so IQ is the same but just lots faster (that you don’t really need). 5D2 center-point is the same as 7D's, very fast and capable to capture moving subjects in single-shot mode. 7D is better in tracking in AI-Servo mode to capture subject in continuous frames of burst.
I also happened to have the same Florence photo
|It's good to be at home by Nightcrawler12|
from Best photo of the week...
|Tiny tree by Kaappo|