I've pretty much settled on the Astra Platinums as my blade of choice but I still had a few others in my sample pack to try out. I tried a 7 O'Clock Platinum (blue box) in my Muhle R89 to see how it was. It shaved very well, smooth with no irritation just like my Astras. I remembered these are made in Russia as well so I compared the boxes and they have the same address. Are these run on the same assembly line and is there any reason the 7 O'Clocks are twice as much as the Astras? (Besides marketing.) They look & shave the same to me.