http://www.brushlesshobbies.com/80A-Brushless-ESC-Sensorless-Sensored-with-USB-FlashProgrammer_p_112.html
Sensored or Sensorless (I have a pair of spare 17.5's and my little 380 that could use a better speedo), rebadged Hobby Wing controllers, with USB port included.
2 shipped (free USA shipping) under $106, they have a 120 amp version for just $5 more per speedo.
I havent really found a bad review, but then again, I wasnt really looking for bad news, just real reviews of the HW stuff.
Once they arrive, I will set one up in non timing mode for 17.5 (in a Short Course truck) and one in the JRX with the 380 motor and report back how they work and "feel" on the track.
EDIT: arrived this morning
each box is dated and signed (all speedos are pre-tested)

comes with a motor sensor wire also, no connectors, neat little USB port hook up:
