My answer is: it depends on the material the figures are made of, the historical period and the scale.
Considering only 1/35 (or 54mm):
Dragon is the best regarding styrene and from WW2 to modern, but Tamyia and Masterclass also have some nice ones.
Warriors and Blast are leaders for resin and modern, but some Verlinden figs aren't bad.
Jaguar has great figures for WW2.
Andrea, Pegaso and Romeo are undiscussed leaders for white metal and they cover almost all historical periods, concentrating on ancient and middelages.
This is my humble opinion on 1/35 scale models, but if you're interested I can continue on the other scales!