That's a hard choice! Perhaps
Xhan Empire becuase it has a good amount of ships with a really nice and unique aesthetic that stands out but in a way that still fits the game's artstyle, I guess. Like it looks very distinct but the shading and
vibes still make it blend in properly instead of being too glossy and anime-y, I guess.
My favourite individual ship is probably The Infernal Machine from
Underworld, especially with the cannon upgrade. It is slow, has a massive amount of burst damage and can be really tanky. It is a perfect match for me as a manually piloted ship. The Infernus is ok but it's just a weaker Infernal Machine and doesnt have quite the same devastating opening barrage.