I have been using Markley Blue Steel strings for a long time but a few years ago finally tried the Blue Steel Nickle, like them a lot and don't plan to go back to pure steel strings. The nickle strings definitely have a more mellow high end than the steel strings and the windings feel a lot smoother and more comfortable, too. I got a set of DR Hi-Beams for cheap and tried them but they were too bright, may try the Sunbeams at some point. I don't tend to do much experimenting with bass strings due to the cost. I prefer strings with a tight core tension. The TI Jazz Round Wounds sounded great to me and the windings were the most comfortable of any strings I have tried but I could not get used to the low tension.