All castles in Heroes 3.

That's true. For example, I don't have a favorite castle; I can play with any, but I play with Inferno the least. There's something about it that I don't like, although I'm not saying it's bad. And in general, when playing on random maps, the main hero usually has at most half of their units from their home castle by the end of the game; the rest are either angels/wyverns or high-level units from other castles they've built. So, it turns out to be a kind of international team. By the way, a mixed army is the most effective because you take the best units based on a combination of factors, and the selection is made taking into account the enemy's army. This is what I mean: many people focus on the starting castle and don't build other castles, which is a big mistake.