DR was set up at the Dallas Guitar Show last weekend, and I picked up a set of the 55's put them on my Thunderbird, and tuned it BEAD. The strings were laying on the neck, but a quick truss adjust and it was all good. I took it to rehearsal last night and was VERY happy with the way it sounded. Held tune, nice low action with no buzz, and great clarity out of the B string. The thing I was most impressed with was the tension. Obviously, it was a lot less with the truss adjustment needed, but they never felt floppy or loose in the least. In fact, I could hardly tell a difference from standard tuning as far as tension goes. These strings are a win for DR.