Originally Posted by dmc@RCR
Don't worry as much about the materials as the quality of the roofing company.
I agree completely with what Dennis said.
The best material, installed incorrectly, will wind up bringing you misery down the road for a long time, giving the product a black-eye, when it is more likely the hack that installed it.
Ventilation and Roofing Manufacturers have related that through their own studies, as many as 90% to 95% of ALL shingle roofs installed, are done so incorrectly.
Find that 1 out of 10 or 1 out of 20 contractor that would rather put on a quality roof, rather than just a fast one.