Went into store to buy a set of of 9's and 10's... I usually use Ernie Ball. Why did I buy Boomers? They were the only brand left in my string size. All the rest were sold out. So, I bought the GHS Boomers and have been using them for a week or so. So far, a solid, nice feeling, stay-in-tune, string. Frankly, I see minimal difference between all the major brands. They all work well. Time will tell.