I wanted strings to use in D-tuning (D-G-C-F), standard strings are obviously quite floppy in this tuning, and that doesn't give a great tone. With these ones, the string tension is really nice, and they sound great in that tuning, massive sound. A minor let down is that they don't stay "fresh" for a long time, but they're not the most expensive of strings, so if you really need a new set of these, it's not a big deal.