I find myself always going back to Amethyst despite liking it a bit less than Primal.

Primal is great for a UI standpoint, elegant, fast and eyecandy.

Amethyst is more complete, it has a better zap integration with other wallets (WoS is a great example) and it interacts better with communities, lives and other cool nostr stuff.

I want to like Primal more, but it has a some way to go before reaching its maturity.