I've got a one way flight I'm looking to book using DL Miles from HND to NYC in early June and would like a business or first product. Delta is showing options for China Eastern(777-300) & China Southern(777-300ER) for 80K Skymiles and Delta One (777) for 130k.

Looking for feedback on either business product MU or CZ. Are they both inferior to the DL One product. Opinions on the added value of DL metal. I'm already understanding that no phones and challenging wifi would be expected on MU/CZ.

Also, is there another Skyteam product/routing that I'm not seeing that may be better than all three?

Thanks!