Hi, I currently shoot with a Canon 50D and love it. I was planning on upgrading my kit lens and grabbing the 24-105mm L. Whilst pricing it I was offered an option to trade in my existing camera and lens and get the 5D Mark II with the 24-105mm for an extra few hundred pounds. I like shooting street, architecture, the occasional party and would like to get into more candid shots. I'm aware that the 5D MkII is slightly slower than the 50D but appears to be significantly better at high ISO. A bit of me is also thinking it might not be a bad idea to move the 50D on before the replacement is officially announced. I have one EF-S only lens (Sigma 30mm f1.4) which I would probably replace with the Canon 50mm f1.8, again as part of the part exchange. I don't mind spending the money but do want value for it. I'd really appreciate any thoughts, for or against the move?