Wide Band O2 Sensor Controller.

[lmcchesney]

The topic of WBO2 sensor and controller comes up again. I have done a search on the forum, but have not found complete information.
Which controller is the best option for the LSU O2 sensor?
GoTech manufactures a unit for $350.00
Tech Edge has a DIY kit for the controller for $145.00 USD.
MegaSquirt speaks of a stand alone O2 wide band unit but I cannot find a finished reference or site for purchase.
AfreshBoardBOM http://www.squirrelpf.com/msavr/index.php?page=AfreshBoardBOM speaks of a unit, but seems to be still in design phase.
A preferable option would be a unit that could interface with MegaSquirt and/or Kit Carlson unit. Dave Hunt, do you use a WBO2 closed loop feedback to your MegaSquirt? Is the SuperMegaSquirt design include an O2 sensor input?
I'm at that point in the design and can't seem to find a reliable experience source.
Thanks,
L. McC