If someone is eventually hoping to do mainly portrait photography, would the advantages of the Nikons (some) having a 1/500 flash sync be enough to adopt Nikon over Sony, Olympus, Pentax or Canon? I REALLY REALLY REALLY don't want to start a Nikon vs. Canon debate. But I am wanting to get the best camera I can get to pursue this. And its looking like an old-school D70 or Canon 20D. The only reason I'm not that open to the other three is the in-body stabilization. I want it in the lens. I do want to be able to autofocus with the 50mm 1.8. So that limits my options. The Canon seems super nice, but so does a Nikon. And for now I just want to barely step into the DSLR market spending as little as I can on a body, get a few lenses and a few flashes, and then later on upgrade the body. So I wanna go used. Anyway, please don't turn this into a Nikon vs. Canon bit. I just want to know if there are any features the one has over the other (like the flash-sync speed) that give a one-up over the competition.