ETH looks attractive but is actually quite risky compared to BTC. Among many reasons, the jury is still out as to whether it will be deemed a security which will impact whether it'll be spot approved or not. By definition, given the Ethereum foundations role, it is a security in my view. That said, we'll have to wait and see. Performance wise it'll outrun BTC during the bull run but that is solely tied to BTC moving the market & not on its own accord.Imagine betting on the right altcoin in this bullmarket, easily 100-500X. Maybe there is anohter Shiba among the 23,000 cryptos out there. Problem is that you won't be able to liquidate it in a timely fashion, if at all. If you made a billion dollars on some obscure coin, trying to pull cash it out before the crash would be impossible. There would be no buyers for that amount, and liqudiating it, even if you sold it, would be very hard.
The only other realistic alternative is Ethereum, and I believe you can also buy an ETF for it. It will probably do just as well as BTC, maybe better, but I'm sticking to what's safest.
Finding the small alts that will pop off & explode is basically a lottery. I might buy a very small amount of ETH but for the most part I'm going to simply enjoy the upside of BTC after all this waiting.