Which platform do we think is more reputable and have good track record of security? Does either of them have good liquidity?
You'd have to move the thread to altcoin discussion. Should be more appropriate given that it's about DEX.
For DEX, I recommend popular ones like Uniswap since their code has been fully audited (this doesn't mean it's hack-proof btw). CEX is not recommended except you need quick on/off ramps fiat services which most CEX offer out of the box. For DEX recommendations, Popular ones like Uniswap, 1inch, etc should do just fine.