Probably DAI.

I personally am not comfortable in putting money in any centralized stablecoins on a large scale. Perhaps a few hundred dollars woudl be fine, but definitely nothing major.

DAI on the other hand is over-collateralized with some really high quality collateral and algorithmically controlled, which I think serves a lot better for the process of decentralization of control. But stablecoins in general is not a category of coins where I would put my long term wealth in.