CoinMarketCapitalization(CMC) this is th most trusted and worth to check of your coins , though i the past they have been questioned but now that they are owned by binance(as that is what i believe) all the issues had been settled and the ite is more functional and worth a check.
It's the most visited but about being trusted, everyone has their own trusted platform and has that label.
And when they've become owned by binance, most of the bugs came out and it's better before binance has taken over them. But as being said, they don't have that much difference with coingecko so you prefer your own tracker.