Got a friend who wants me to restring his racquet with the factory strings it came with (Nblade 98 18/20, Wilson Sensation.) He's had the racquet a year or two and hasn't had it restrung yet (strings not broken but they are brittle and lack spring/pop, they move a lot also.) However this string seems pretty expensive to me (especially in the UK) and I'm wondering what would be a better value replacement? (a decent long lasting multi.) I looked it up on stringforum and it's not very well reviewed and many complain about the price. He doesn't know anything about strings and just wants something that will last as long as the factory strings (he doesn't have much money so I would like to find him a better deal.) Any advice appreciated.