Which platform do we think is more reputable and have good track record of security? Does either of them have good liquidity?
Which is old, has good reviews, and definitely has good liquidity. Whether it's CEXs or DEXS, such factors are necessary to keep in mind before depositing on them. Many scammers could easily copycat other exchanges as many source codes are open source, so they might trap you into many offers while they might not have enough funds or liquidity.
So, choose wisely before depositing, and DYOR too. Because relying on members or others answers will not just make you knowledgeable but could also lead you off track, backup your knowledge you get from members with facts and proofs too.