Are you more bullish on Ethereum or the alt coins that use it?

I keep going back and forth on this so I wanted to get some other viewpoints. My largest positions are BTC and ETH, but I like quite a few of the ERC-20 tokens as well. If I wanted to put $1k into crypto, would it make more sense to put half in Ethereum and the other half in some of the ERC-20 tokens or invest more heavily in the individual coins themselves?

I’ve been looking at it kind of like Ethereum is what they’re using anyways so if the alt coins go up, Ethereum wil go up as well. Kind of like with the SPY ETF, If Apple goes up and it’s SPYs largest holding, then the ETF will go up.

Since there are so many coins using Ethereum, would putting the majority of the investment into Ethereum be the “smart” way to go about it since nobody legitimately knows which alt coins will be the most successful?

Edited to change coins to tokens.