So having tried out Wilson Nat gut in Crosses with Alu in mains on my K90, I love how racket plays with it. I will switch the config the other way around to test it out. I would go down the cheaper route of nxts, but i have popped them in the mains at 57 and 50lbs (one of the middle strings) after a day or two of tennis. So far, the nat gut in the cross doesnt degrade as much as the nxt (semi-w forehand, eastern dbl backhand) from what I see and I think going gut vs nxt is the way to go for me. I bought the champions pack when I bought my k90 just to try it out and it's awesome. I know alu rough comes in mini reels, but I dont see nat guts in reels. I guess they only come in packs? Was trying to save some money. Is there a nat gut string that compares to Wilson Nat Gut 16s?