The traxxas esc is the Velineon VXL-3S. The one that comes in the Slash.
The sidewinder esc is sold. I have the VXL-3S and the velineon 3500 motor combo. I will sell the combo for $85 if payment is sent as a gift. If you are worried about it check my feedback. More than half the people who bought from me have paid with gift through paypal.
JEG