We installed three on our build, one each bathroom and one in a finished attic space. We chose Sun Pipe brand because of their experience and the roof jack is made of galvalume. Some mfgr's use plastic roof jacks that can deteriorate in certain parts of the country.

Here is a link that might be useful: sun pipe

I used Solatube when I had a new roof put on - roofer installed the portion that went on the roof and grandson installed the attic/ceiling portion - this was in a room where natural daylight was severely lacking due to covered patio on North side.

We've got two Velux Sun-Tunnels both 14". We chose Velux because the style blended in well with the roofing since they were going on the front of our house. One's in a small powder room and the other a utility room. They have been great. We got the rigid tubing and had to use two extensions with each, but the lighting is still very very good. Occasionally we get a bug on the lens (at the ceiling area) but it's easy to access to get it out. We had a small leak in one at the first rainfall right after install due to contractor error but he fixed it immediately and we've had no problems since. We recently replaced our asphalt shingles with steel and the roofer was able to keep the sun tunnels in place.