yes, Solana is best coin but Sell Ethereum is not a good option because the market value or market growth of ETH is high compared to Solana. you should buy Solana but don't sell ethereum for the same.
It would be very ridiculous if someone gave up Ethereum to get Solana at the same price because the price of Ethereum and Solana is very different and the potential is very much different, so it would be very ridiculous to let it go.