Hi Nick, been awhile, how's it going. When I ordered my Sabre I had it come with 30m lines and that's the length I use on my Blade as well, for Exeter's inland spots they do make a lot of difference. You probably noticed that with 25's when it's around the zenith there's plenty of wind but as soon as you start to work the kite you have to bring it down out of the sweet spot, with the 30's you can still work it without ever having to bring it down too far.