Dean Markley 2557 Blue Steel Electric DT

An advancement in technology.
I heard, that when NASA astronauts checked the spaceships that came back from space, they found out that the structure of metals was changed. They had become stronger. The same technology is applied here. The strings are treated in extreme cold, and they are more responsive and somewhat stiffer.
I use these strings on my superstrats, to play in B standart tuning. In comparison, I use 12-68’ strings from other manufacturers, and they seem as tense as these blue steels. They hold up great, they sound really bright and so far, I haven’t broken any single one of blue steels strings.
If you use coated strings as I did and still do today, then I suggest buying a string conditioner, because these strings get dirty fast. I suggest cleaning these (and basically all) strings after playing, and they will stay great for a long time.
Note, that the first three strings are 13 to 26w, which means, you might have harder time playing solos. The fourth string is wounded, similarly as acoustic guitar sets, which gives more aggressive low end vibration, and tighter sound.

Perfect strings for people who like high tension/thicker stings or who play metal/down tune. The string gauge makes down tuning keep the normal tension, perfect for drop D and even drop C. I bought these strings as I found when I tuned down to drop D the low D would be a little loose and go out of tune easily, and drop C made all the strings have problems. These strings have fixed this problem and now I can play any tuning without loosing tension!
Sound quality is excellent as are all the Blue Steel range (I own a blue steel string set for my bass and they have lasted longer than any other string set I've used).
One other thing I should mention is that usually new guitar strings take a while to settle in and go out of tune a lot at first, these adjusted really quickly. You could easily string these up right before a show and have no real fear of them going wildly out of tune like other brands.
Regardless of weather you want to drop tune or not, get a Blue Steel string set, I can't recommend them highly enough and there are many different gauges for all players!