I can only comment on EVA. IMHO the EVA Deluxe Evergreen cabin beats CO Y hands down. I compare the two services because you can probably get Deluxe on EVA, perhaps through a consolidator for about the same as the CO Y fare - or marginally more. EWR-TPE 747 on EVA is a real pleasure. Deluxe on EVA is the lower level front of the 747 - so while the seats are a tad better than Y you get a false sense of being in FC - and the service in Deluxe
is probably as good as FC domestic on CO.

I love CO but EVA is a better choice!!