The Gold Tip Feather (XL) and All Gold Feather (XL) would be the most popular Feather in this market so far.
There are some Feather that is very hard to get, although, it could be available at DELTAone.
Needless to say, Gold Tip Feather with Gold Claws would be definitely one of them.
And, this item has just been stocked last week!
Its presence would be out standing enough that there is nothing else you can compare to!