I'm prefer singles. I use a Carbonex 30 M. I string @ 24/25 lbs. since strings lose tension. Why I'm retiring from BG-65. Good durability. Sure I'll save money, but not performance... I tend to notice I lose tension too quickly. What string should I go with next? BG-80 and Ashaway Micro Power are in my mind, but I'd like to hear hear some comments from people who own these.