I read an old post here where folks said the Premiums were pretty good blades (where the Extra blades were not considered so).No, I'm curious for how it goes! I'm considering all blades I haven't tried for future acquisition disorders.
So far, for posterity, I have tried with good results:
Shark Platinum
Astra SP
Treet Carbon Steel
Wilkinson Sword (German)
Feather (so effortless it’s scary but left me irritated)
I have here and have not tried:
Shark Chrome (suspect will perform well)
Derby Premium
Blades that were a dud:
Dorco Prime (suspect they would be a dud in any razor)