Another +1. I've found that it takes a lot of scans to get a solid representation of the tree, but I love the way they show you the quality of the scan (LEDs with well known positions are green, poorly are red, and mid is yellow). I think I had to do about 30 scans to get all of the lights I cared about, but I also put lights deep into the tree.

I wish there was a bit more customization. Particularly around the flashing effect. Also, oddly, the color settings are HSV, but they don't give you the V, so you can't get a clean grey color. I wanted dim white lights with sparkle flashes, but I haven't been able to make that happen.