Astra SP, Treet Classic, Shark in my DE 89 w Extra Grip handle
I used a DE89 for 10 years and mostly used Feather blades. But it's a very generic razor and different blades show their own character in it. Other razors can be more quirky about blades. My favorite DE89 blade may have been the now almost unobtainable Polsliver, mild and long-lasting. The GSB is excellent, too.
I love them too. They're quickly becoming my go-to blade.I'm a voskhod guy.
I recently bought a Muhle r89 (same head), and got a sampler pack of the following, which I've listed in descending order of preference:What's your favourite blade to use your your DE89?