Optically, the Conquest HD is superior to the Trinovid, as its apparent sharpness, due to better CA control, was superior. I found the build quality and mechanics of the Trinovid better than that of the Conquest.
However, if I were to choose something from this range, it would be the Vortex Razor HD (single-hinged model). It combines high quality optics (I couldn't discern which I preferred optically between it and the Conquest HD), with good build quality and a much more ergonomic, light package (24.7 vs 28.0 [Conq.] vs 28.6 [Trin.]) with the closest focus (6').