Diamondback sent out their tech, CJ, within hours of me sending them an email requesting a quote to replace a number of locks in the house. CJ did a quick assessment and gave me a quote right on the spot. He was efficient in installing the 4 locks and was very helpful in explaining how the new fancy Schlage keyless lock worked. He was very professional and had walked me the pros and cons of my various options before we got started. I give these guys a 2 thumbs up!