Would it be smart to sell my T4i and buy a used 5d ii? I have found some great deals on craigslist, which I would only have to invest a couple hundred more dollars. But I am scared to go back in time since the 5dii came out 4 years ago. Mark 5d iii is not even in my range. I just bought a 24-105mm L lens so it would be a good match. Any input? Thank you