I think Binance would be the best exchange if you want to use a centralized exchange because it is top position in all cases and has enough liquidity for all coins listed there. So you can buy and sell any coin instantly there without any hassle which you may not get in any other exchange. DEX is very good for high privacy and safe trading but compared to CEX the trading fee is very high so since you want to trade with only $200 DEX is not a problem. But if you are trading with thousands of dollars then it would be better to use DEX because there you will be in full control of your total funds and in CEX your funds are under the control of others so there is a lot of risk.
There is no doubt that Binance is a good exchange, the biggest exchange among all exchanges. I have been using it for the last two years, but it is no longer reliable, People have been transferring their assets from this exchange to other exchanges ever since the EC dispute started with it. A recent $4.3 billion fine and CZ resignation as CEO have made the exchange even more risky. Centralized exchanges are by no means safe, but when an exchange has issues like this, holding your assets there can prove to be even more risky.
However, we need some kind of exchange for our trading and buying and selling and we have to keep some money there, so I think ByBit can be the most reliable at this time, because there are currently no such problems and we should always keep our assets in a place that is free from problems.