I would not only look at what project or coin promises you the highest APY. You should focus more on the use-case of that project, how big the trading volume of that coin is, on which exchange that coin is already listed on, how popular that coins is and also other metrics. An APY of 1000% means nothing if the coin will be worthless in a few weeks after you can unstake them again. So if i had to choose i would rather go for a 10% APY Ethereum staking pool than a 1000% APY staking pool of a totally unknown new project, because it is very likely that this new project will be gone in a few months again and if they offer APY's of 1000% then this will only speed up that process.