What are the pros and cons of solatube vs velux solar tubes?
my name is Bruce and I work with VELUX. I would like to provide you with some insights into our SUN TUNNEL skylight products.

The reflectivity of the tunnel material used by Solatube is 99% reflective, while the tunnel material used by VELUX is 98% reflective (rigid tunnels).  However, the VELUX tunnel comes with a 20-year warranty that it will remain highly reflective, while Solatube’s warranty is 10 years. 

VELUX warranty link to pdf

Solatube warranty link

Reflectivity tests are conducted in a laboratory, but the light output of a tubular daylighting device will vary based on the orientation of the tunnel to the sun’s position in the sky, length of tunnel and time of day. The VELUX tunnel is designed to let the optimal amount of daylight into the home from as many different angles as possible. Our dome cap and our new flat glass cap allow the sun to penetrate the tunnel at many different angles. And the flat glass also sits low on the roof for an appealing appearance.

I hope this helps you in your decision making. If you have other questions about the VELUX tunnels please post here and I will do my best to answer them.