Firstly, I like it because it's cheaper than other popular 7-string sets. I put the set onto my Jackson Dinky JS32-7 to play some Northlane songs and I was not disappointed! The strings are tight and sound clearly, no drawbacks has been found yet. Too soon to speak of its durability since I have been using these for just 2 months. But IMHO, if you carefully clean the strings after everytime you play, they could last much longer than your expectation/