Still rooting for bitcoin. I don't actually compare ethereum with bitcoin since these two could be both profitable to us all especially those that are bounty hunters and those joining on airdrops. It is true that ethereum is connected to a lot of projects in the past until now but bitcoin has more popularity than ethereum.
When it comes to liquidity, it is still bitcoin.
Regarding liquidity, I think both ethereum and Bitcoin have large liquidity and are actively traded in the market. Bitcoin is the main choice of investment in the cryptocurrency market probably because of the factor of trust. Bitcoin is a pioneer in cryptocurrency, besides, with a limited supply, making Bitcoin increasingly attractive to investors as a safe haven
You could easily say that Bitcoin is more liquid than Ethereum by looking at the market cap of those. Bitcoin has the highest market cap while followed by Ethereum. Both are great that is true but for now, most of us will just answer bitcoin because we know how other coins follow btc including ethereum.