I have shaved with something like 24 different razor blade brands and several razors that vary in aggressiveness. Because I have a coarse beard, the least sharp blades (Shark Super Chrome, Merkur, Van der Hagen, Derby Extra) simply do not work for me. However, I can use most other blades as long as I use them in the right razor. I like using the very sharpest blades in less aggressive razors and mid-sharp blades in aggressive razors.
One web site that does a great job of reviewing DE razor blades from both objective and subjective viewpoints is RefinedShave.Com. The author tests blade sharpness using a sharpness tester and also shaves with the blades. Although some people disagree with his specific procedures, I find his results to do a good job of predicting how different blades work for me. However, razor blades seem to be one of the biggest "your mileage may vary" aspects of shaving.
One of the most popular DE razor blades is Gillette Astra Superior Platinum made in St. Petersburg, Russia. Some reviews even state they are one of the sharpest blades. However, after using Astra blades from various sources, I have yet to get a great shave using the blades. They are not quite sharp enough for my beard. The Refined Shave web site indicates they are at the low end of the mid-sharp tier. However, everyone should test those blades as they are inexpensive and may work well for you unless you have a really tough beard.
If you can shave with a straight razor honed on a 8K Norton hone, and Astra SP may work well for you. However, if you like your edges honed on ultra fine hones and then polished on pasted strops, you might want to go for sharper DE blades.