Answer: Yes, it is better to convert 50% of your ETH into frxETH and enter the vault frxETH/ETH to get the best APY. This will ensure that you are able to take advantage of the highest interest rates available. However, it is important to note that the APY rate can change at any time, so it is important to refresh the page regularly to make sure you are getting the best rate available. Additionally, if you decide to convert 100% of your ETH into sfrxETH, you may not get the highest APY rate due to the different risk levels associated with each type of asset.