I'm sure others will jump in with their *unbiased* opinions, but I saw your post and figured I'd jump in
I quote a range of 1/4 mile for very good video. Farther range is attainable, but with degraded quality.
You can see some videos from the system here:
Try later if you get a "bandwidth exceeded" message. I am currently fighting with tripod over why my paid account is mysteriously getting converted back to a free (low bandwidth) account.
Here is a video hosted on a different site that won't get nailed by bandwidth limits:
Right Click here and select "save target as" to save the video to your hard drive.
Black Widow A/V