I think that all stablecoins are quite useless and not so safe as they declare.. no one is sure that these coins are really pegged to something with real deposits of $ in some banks.... I still prefer to buy $ when I need $....
STASIS makes the investor sure that each EURS (euro pegged stablecoin) is backed by one fiat euro. You can check it here:
https://stasis.net/transparency/. They also promise a full audit in the upcoming month