Interms of security DEX are the best but when you talk about liquidity and trading volume centralised exchange are still the best. I think i will stick with centralized exchange till decentralized exchange increases in liquidity
I think you should be able to find a place of exchange that has very high security and has a very high trading volume so that your trading can be more secure and comfortable, because if you trade in a quiet exchange place that will make your assets not grow.