Instruct: Classify the given review into positive or negative sentiment.
Query: Incredible Crisp/Raw Sound

I have been playing acoustic guitar for nineteen years, and these were recommended to me by a folk/bluegrass guitarist a little over a year ago. I gave them a shot, and now every time I try a different brand or gauge I keep coming back to these.I use the John Pearse 700M on my Gibson J200. They capture the bluesy tones just right if I'm playing technically, the crisp/warm tones if I'm fingerpicking, and they provide a great rhythmic backdrop for a backup folk guitar. Dynamically, they allow for my guitar to be big and beefy or soft and tender.The only drawback that I have is that these strings tend to go dead quickly. Since that is in large part my fault for having oily skin that corrodes and deadens any string, I should really give this string 4 and a half stars; but they don't give that as an option.I have been very satisfied, and changing the strings frequently has just become a part of my routine.