Not to seem rude there, but it is more difficult to sharpen D2.
Personaly, when I sharpen knives I prefer to take the "least" metal off the blade as possible. The diamond sharpeners are great (for a "quick" edge), but I would rather take the time to get a good edge, than take more metal off. For those who are more proficient at sharpening, they can make a blade last a lifetime (rather than number its years). I use a strop, assorted stones. Many of my knives, you can hardly tell they've been sharpened, but they have a good edge! Ive been making, collecting knives, for over 23 years. It takes time and experience to help your knives last.
Personaly, when I sharpen knives I prefer to take the "least" metal off the blade as possible. The diamond sharpeners are great (for a "quick" edge), but I would rather take the time to get a good edge, than take more metal off. For those who are more proficient at sharpening, they can make a blade last a lifetime (rather than number its years). I use a strop, assorted stones. Many of my knives, you can hardly tell they've been sharpened, but they have a good edge! Ive been making, collecting knives, for over 23 years. It takes time and experience to help your knives last.