For me, the best metal finger spin yoyo is the YoyoFactory Czech Point Pivot. The dimple and angled cup are perfect for landing them whether you’re an old pro or a beginner.
Second the Sengoku ERICM. Possibly the best finger spins in the game.
It’s the only yoyo I’ve hit this trick with
https://www.instagram.com/p/B9IdCiQBlJO/?igshid=rqkxlofo4fyv
Metalhead?
The Metalhead doesn’t appear to be fantastic for finger spins (albeit doable) because of the jump in the cups. I’ve never played with one though, so I have no idea!
Now the ERCIM is a really interesting option that you don’t hear much of! The name could be better though, it’s been spelled a different way every time it’s mentioned in this thread.
The ERCIM is great for precision in landing the fingerspin EXACTLY where one wants it. However, I still think the Czech Pivot is a better option for learning finger spins. I own both.