Zvesda, for your purposes.
Personally, I find them a bit big & often too energetic(?) for the purposes of creating massed, drilled armies but for skirmish warfare, you don’t get better.
Italeri are OK but a bit big headed. HaT are the “wargamers’ ideal” in that they are mostly in useable poses. Strelets….will break your heart but often have the occasional great pose.