My experience is similar.I've been shaving with my Techs over the last week; I still find the Gillette Techs a little smoother than the Star safety razor or the Baili clones. All 3 (flat bottom, pre-war Canadian 1932 triangular slot, post war oblong slot) all shave closely and smoothly. I given an edge to the flat bottom as the head is heavier, which gives it better balance.
The prewar Gillette US Fat Handle triangular Tech shaves smoother and closer than the RazoRock DE1 clone. The DE1 requires more attention to deliver a nice shave. Shaves are more pleasant with the prewar FH Tech.