Today I bought a "Bull Dog" 5 blade cartridge razor from Shoppers Drugmart (owned by Presidents Choice aka PC aka Loblaws - I am in Canada). It was a comfortable first shave. When I opened it and was looking at it I noticed something familiar with the head of the handle so I went looking at my other cartridge razor handles and found out its blades fit the Schick Quattro handle (see picture) so there is a 5 blade cartridge that will use the Schick Quattro handle (out of all the cartridge razors the Schick Quattro and Dorco Pace 7 I don't like/is uncomfortable because of the angle of the blades). Are there any other blades that fit the Schick Quattro handle?