Which ETF has high liquidity?

Hello there, I'm curious about your opinion on a matter related to the world of cryptocurrency and finance. I'm specifically looking for an ETF, or Exchange-Traded Fund, that boasts high liquidity. Could you elaborate on what you consider to be a high-liquidity ETF in this domain? Are there any particular factors or metrics I should be looking out for when assessing the liquidity of an ETF? Additionally, could you suggest a few ETFs that fit this criterion, along with any advantages or disadvantages associated with them? Your insights would be greatly appreciated.