As long as Binance has still the biggest volume, I would say still CEXes have the powers, money goes to safe places and if you see some exchange or bank got the bigger money in it you should know it is a safer place than others.
moreover DEX have less fee in each transaction if compared with CEX especially uniswap now. besides trading volume Dex also have another advantages, some of DEX have insurance to cover worst case such as wallet hacking.
I used to like IDEX, as well as Etherdelta or forkdelta for day trading. of course, the people on this forum are familiar with the exchange. but currently, I only use Binance DEX for day trading. But it does not last long. I think its popularity is not as popular as it was when a lot of tokens ended up migrating to the Binance blockchain.
idex was good cex exchanges , its take less fee than other cex and also idex have good trading volume.