I bought my TAG Link from PT after reading By-Tors excellent review and enough praise has been lavished on the rep for me not to have to contribute here.
However I will say that I have adjusted the time just TWICE in 3 weeks of ownership and I even had to rely on the chrono when my wife went into labour so I could time the contractions.
The only thing that let me down was the clasp screw fell out within a day and it's proving a sod to replace.
So far (fingers crossed) my 7750 has been outstanding, in fact I just commited to another after I saw Josh's excellent new SS Chrono Avenger