I played D'Addario XLs for many years and then went to DR Tite Fits. I felt that the DRs had the perfect amount of resistance / tension and they seemed to last a long time. A few months ago I was in a pinch and picked up a three pack of Slinkys. I hadn't used Slinkys since high school. I was very pleasantly surprised. I may end up ordering a case as they are easily available and always on sale. Oh - I play .10s on my Fenders and .11s on my Gibsons.