The A129 Plus Duo is still a very solid model! It comes with the core features needed in a dash cam, and has proved itself as a reliable unit in it's life-span.
Still, that's not to say that more modern VIOFO models don't have improvements over it, for example the A229 Duo has a 2k rear camera, improved build quality, and voice notifications, as opposed to just communicating to you through a series of beeps like the A129 Plus Duo.