If you don't feel like spending 2$ per foot or more then try trophy braid or new england bzz line. I use the bzz line for my spin sheets. The trophy can be tapered (no, doesn't look as sweet as the dyneema/vectran cores but works fine). I am using trophy now for my mainsheet because although I spend a lot of money on somewhat silly stuff, I can't seem to bring myself to spend that much on lines (generally I look for under 1$ a foot). There was an amazing sale on a certain store recently disounting D2 and V2 down to 70c a foot though, so watch for clearance stuff). IMO The only line that shouldn't be allowed some stretch is the spin halyard and tack line. If someone can point to any serious/real world/non-olympic level advantage of 2$/ft vs .70-.80/ft I would love to hear it.