In the process of getting a home saleable, I paid over $10K to get Certainteed Landmark TL shingles placed on the roof of the house. The old shingles were completely ripped off.
The Certainteed tiles look like Chicklets in the sun, and to my eyes, very unattractive during certain times of the day. The shadows make your property appear to be a haunted mansion. Why all the hype about these "architectural" shingles? They seem to weigh a ton, and initially do not even lie flat. The brochures do not capture the clunky quality, and make you think that you are getting a smoother, more uniform product. Before you make a mistake, ask/demand to see a full-scale example of the shingles on a real roof. You might hate 'em, or you might love them.