I have had these on less than 24 hours and suffice to say I'm very impressed. A motorist rolled down his window and commented how he could see the 140L from very far away, and wanted to know what they were. Every single car that passed yielded the full lane too (4 lanes road). The 600L lights up signs about 1/8 to 1/4 mile away.

I added the 400L tail-light kit for an extra $15 to mount the 140L on my pannier rack. The kit comes with many sized clamps so it works well (with the addition of a rubber pad to tighten the fit of the clamp on the 140L). I'm running both lights off 1 battery. Initially I was concerned the extension cord would not allow the 140L to reach from the end of the rack up to the battery (mounted on the fork stem) but it reached fine; I have a 25" frame.

Pics to follow soon.