Thanks gents.
I'm gonna try the slow gravity method and rebleed the lines.
Swapping these rear calipers is a fairly simple and common upgrade for the 500E/E500. Its documented by several owner/users here. I think OmegaBenz has swapped calipers/rotors from every M-benz known to man except the mighty SLR...at least not as of this writing but knowing him,he might just be working on finding some now!
