I use Kerly "Sinister Strings" and I don't think I'll be using another string. At first I didn't like them, they had a sort of warm yet metallic edge to them I haven't heard in other strings, but the more I played the more I liked and now I'm hooked. For my Open C tuning I use the 7 string heavy set and just take off the high E, which leaves me with .014 .018 .028 .038 .048 .058. I like a thick high E string. And for my usual weird "D" tuning I use a 7 string medium and light to make a custom set, once again taking off the high E of the set which is, 013 .017 .026 .036 .046 .052. I HATE HATE HATE, new strings because they are always too bright to me, and Sinister Strings are really the only strings I've really liked right out of the pack, and they get better over time. I love deadened strings and unlike other strings which sound too new at first, then get nicer for a short period, then turn to shit, these last and just get better and better. I literally change my strings like once a year, maybe one more time if need be, and these stand up just the way I want them to. I'll have to contact them to see if I can order custom sets due to the fact that I like seriously tight string response. I like to fight the strings a bit to bend them and I like the way very tight strings feel and sound, HATE loose 4th, 5th, and 6th strings, so the normal sets at about the 5th and 4th string are too light to me and aren't thick enough in sound..but the custom set fixes that.