So you think these are the better choice? vs the Drop version? The price is not that different so SQ is everything in this decision. I'm leaning toward these. The Drop warranty can be an issue.
The Drop model seems to have evolved towards "credits" vs. initial discount. I have bought 2 headphones: HD6XX and hifi man 4XX and found the quality to be fine. Seems like original manufacture with some small tweak (color of plastic in the HD6xx case).
Drop does have a history of delaying shipments and confusing or unsatisfactory warranty (as you noted). If it were me (and it might be me in a couple of months) I would order direct. The middleman here doesn't seem to be delivering much value.
[I bought a sheaf knife through Drop which I use for opening packages and repelling attacking bears - pretty simple, no quality issues.]