Thats a tough one....no pun intended

There are so many variables that go into that choice. Some are straigher, some are stronger, others have a better consistency from arrow to arrow and batch to batch.
I would have to say that Easton's XX75 is probably close to being one of the best just because it has been around so long, and continues to stay around. Some other arrows, carbons to be exact, may be truthfully better...but they just haven't withstood the test of time like the XX75. Ask this question again in 25 years and you will probably get a totaly different responce....or maybe not.