Hi, Head Super Power 67 and 69 seem to get pretty good reviews, but have anyone tried Super Power 71? The price for SP 71 is much lower than 67/69, so I wonder if it is worthwhile to give it a try. Head's own website has high praise for all its strings, there is not much detail there though http://www.head.com/badminton/products/strings/strings/?region=eu Thank you for your input, Plusssa
