innovate wideband o2

Anybody using the the LM-1 or LM-2 ????? I am looking to spend some cash on getting the mixture right with my dart. I am wondering if I can get by with the single o2 sensor unit. It would not be that hard to have a plug in one header and switch back and forth to tune.

I have done some research on wideband units and this seams to be the best based on all the other ones dont self calibrate for the sensor wearing out.

Any input would be appreciated thanks