I based my choice of installer on the stellar reviews of Adrian here... and he did not disappoint!
I wanted to string Cat5 data cable between the floors of my downtown condo unit, as I was unhappy with the performance and reliability of the Powerline (PLC) units I was using (and due to interference from the structure, Wifi isn't an option).
Adrian took a look at what I had available and proposed a solution that was much simpler. He was able to utilize the existing lines that had been already installed by the builders for telephones (which, apparently are Cat5!). After new connectors were added and two lines spliced together, I was all set! Testing proves that indeed these lines perform to Cat5 specs.
Thanks a ton Adrian, very happy with the results!