I just bought mysefl a '.casa' domain, got wildcard cert for it from lets encrypt and haven't bothered with any of these. Downside, if internet goes down resolver stops, but thats why I have local NS mirror and all DNS queries go through my resolver.
Another downside is that some devices these days use their own encrypted DNS resolver and fall back to local DNS only for non-public TLDs. Not sure if that will continue working then as expected if your internet connection goes down.
I've been bitten by this with my home router which uses <device>.fritz.box when somebody registered fritz.box.
