We had a fantastic experience with Masters Roofing... Our house was built in stages and, thus, has a very complex roof with many awkward angles, sloped areas and flat areas. It's complex enough that several roofing companies refused to work on it.

Masters fixed slopes that were previously done incorrectly and put TPO roofing on the flat sections and tile on the sloped areas. The seems between the different materials are perfect as are the connections between areas of roof with different slopes.

Masters was not the cheapest option, but was clearly top notch and worth every penny spent. It's been three years and the roof is still perfect.