John was truly fantastic -- John was quick to respond to my project posting, let me know when he was coming, and then came when he said he would. My husband and I were mounting a TV on drywall (in a property we own, so were nervous!), and John recommended the height for the TV and which mount to use. He was meticulous in terms of making sure the TV was centered and level, and even that the electrical wiring was carefully done and even. John cleaned up after himself and offered to come back free of charge if we changed our minds about the height of the TV or were not satisfied for any other reason. I would absolutely work with John again and highly recommend him to others. FYI, my husband is an engineer, and even he was happy!