For the past three years, we have owned the earlier T-109 purchased used from the dealer you mention, Audio Unlimited in Denver. The unit had been traded for the then-new T-109v, which, by the way, specs out identically to the older model.
My wife (a most critical listener) and I auditioned a number of tuners listed in the Top Ten, which you reference, and settled on the Accuphase for a number of reasons. Among them, superior ability to pull and separate weaker signals on an indoor dipole antenna--we're 20 miles from Denver, excellent sonics, features and ease of operation, and unquestioned reliability and build quality.
If we were to replace the 109, it would be with the 109v, recognizing that there are other tuners that merit praise. Obviously, we're quite pleased with the Accuphase.
John and Carl at Audio Unlimited sell three of the Top Ten tuners available, as you note. The three of us agree on the T-109 as the creme-de-la-creme.