Wow, thank you for the first hand experience. As for the heat and the power draw, are you sure that your OWC SSD was free of faults?I bought the 480 SSD for my macbook air 2015 with 128 GB, and after I installed it I wanted to get rid of it as soon as possible and returned it asap.
three reasons:
1: the SSD can't be recognised as internal ssd "for some reason", and can only be recognized as "external pci-device" (with all consequences already told). Reinstalling osx was a drag.
2: my air was always running very cool, almost never feeling hot, but with the OWC ssd, several times it was feeling really hot while not doing anything special (watching a film?)
3: most important: I have the air for a specific reason: its stunning battery life of more than 10 hours, but with the OWC that battery life was at least cut in half
so well, that was a quick decision.
Oh and also, very dissappointing R/W speed. Half of my original. mkay.
So... no. I don't think they did a very good job, and a lot of how they advertise is very clearly vague on purpose.
If it would be "perfecly compatible" then my mac should recognise it as the internal disk, not an "external pci-device".
Stay away from this. Really. They shouldn't have had this released.
I read the topic through after I already bought it, and I'm afraid all of your concerns are righteous.
If you want to upgrade your 2013-.. machine, look for an original SSD, or sell it and buy a new one with a bigger disk. Or well. Get some half-ass excuse for a vastly overpriced "upgrade" in size which negates half the advantages your macbook had in the first place.
Thanks again,
Magnus