eMAXIS Slim vs Rakuten equivalents (S&P 500 / All Country) — worth switching or mixing?

I currently hold mostly eMAXIS Slim funds for both the S&P 500 and All Country, and I’m generally happy with them. That said, I’ve noticed the Rakuten equivalents have slightly lower fees, which got me wondering whether there’s any real benefit to buying into Rakuten going forward. I bought a good chunk when the funds were first introduced in November 2023.

My hesitation is that Rakuten’s funds are relatively newer and seem to have slightly higher tracking error, at least so far. So I’m trying to weigh:

Marginally lower fees with Rakuten vs. eMAXIS Slim’s longer track record, larger AUM, and historically solid tracking

There’s also the points thing – but I guess it’s a marginal amount.

For those who’ve looked into this (or hold both), do you think the fee difference is meaningful enough to justify switching or mixing, or is sticking with eMAXIS Slim the more sensible “sleep well at night” option?

Appreciate any insights 🙏