I dint mean to say Elance is bad or something, I just prefer Odesk over Elance and thats my personal opinion. As I mentioned I find more projects on Odesk that interests me, that is just evident that I was giving my personal opinion.

And if you want differences between the two, I would say the option of using 4 extra credits on Elance to get your application on top is very stupid and Odesk has a very simple UX.