Renting professional digital cameras in Boston?

Me my girlfriend and a friend of mine have been trying to update our portfolios with nice professional photos for our modeling careers. I've hired photographers before and went to events where our photos are taken for free.Me and my girl have a child now so we really don't have time to follow a photographers schedule. I was thinking of renting a Cannon or Nikon for a weekend to go all over Boston with various clothes to change into and take some photos. Is it worth it or should we leave it to the professionals, are cameras like the ones used in photo shoots more complicated then simple digital cameras. What equipment we need exactly if we're going to random spots in Boston to take our own professional photos both in the day time and night. You know of any places in Boston where I can rent a Cannon/Nikon

Why not buy a new one.cameras from internet are very cheap, you can go to http://www.pickegg.com/wholesale/digital-camera/ to have a look, where there are a lot of cameras for your choice.