I have one of each, on different bikes.

Excellent. No problems with either.

I now prefer the double wireless, because the sensor is hidden away on the left rear chainstay.

It is not a small sensor, however.

To be honest, it is possible I could put the sensor on the non-double wireless on the rear tire, but I've not tried it. I've always heard it was best to get the sensor as close to the head unit as possible.

The double wireless doesn't seem to mind the distance, though.

These are nice computers — I especially like the E-Z2Read big numbers, and the no-button face.