I am not a roofer, but I also do a lot of roof inspections for insurance and attorneys on commercial and residential roofs. Also not an Atlas fan and also would look at architecturals. Make sure the contractor pulls a permit. Write into the contract that the contractor notify you 24 hours in advance of their request for inspection and be there, ask the building inspector lots of questions. Especially ask about nail patterns, over-driven nails, edges, etc. and most inspectors will take an extra 5 or 10 minutes to make sure you have been treated right.