I do own the Dato and while I do not own the panochrono nor have I seen it in the metal, using my GO Sentator Perpetual PT as a gauge, I can tell you that the level of finish and attention to the most minute detail, the GOs really cannot come close to the Dato. The Dato i think is also priced higher than the GO you have in question.
Don't get me wrong, I'm a fan and owner of both but Lange is just at a different and higher level for me. I'm sure others will beg to differ.
Best is to go see for yourself both in the metal and decide for yourself.
