I am familiar with Eagle and will use that until Fritzing matures some more.
I really think Fritzing is the way of the future but it has a long way to go, and that is OK! Overall Fritzing is excellent for breadboard work and good to get people in to simple designs.
I'm looking forward to more from Fritzing.
I recommended to a colleague today to use Fritzing for his breadboard lab work. He could then make a nice schematic from it. From there he can re-draw the schematic in Eagle (I always believe in two draws = 1 production run). Then in Eagle he can lay out the PCB, output the needed manufacture files and send if off to any number of places in the U.S., Malaysia or China for manufacture.