None of those options are economic systems. (Believe me, I study Economics at Advanced Higher level which is basically 1st/2nd year university). They're just names applied to the kinds of governments that used one of the 4 basic structures: Command/Planned, Free Market, Mixed & Traditional.
My favourite of the actual four basic systems is probably the Mixed economy because prices are fairer in that system. Prices are set by the laws of demand and supply so people always get what they want. There's a lot of disadvantages to it, but because the economy is allowed to do its own thing for the most part, things tend to be fairer. That said, there's certainly room for bigger gaps between the rich and the poor and monopolies can exist buuuut that's why it's a mixed economy, because the government can get involved in situations like that.
My favourite of the actual four basic systems is probably the Mixed economy because prices are fairer in that system. Prices are set by the laws of demand and supply so people always get what they want. There's a lot of disadvantages to it, but because the economy is allowed to do its own thing for the most part, things tend to be fairer. That said, there's certainly room for bigger gaps between the rich and the poor and monopolies can exist buuuut that's why it's a mixed economy, because the government can get involved in situations like that.