IMHO, there are 2. Carbon Express Maxima Hunter, and the Easton ACC. The tolerances of both are very tight and the manufacturing process of both is incredible. The ACC has been around a long, long time, and that's not w/out good reason. I would have to say the Maxima Hunter edges them out by just a touch, strictly due to their spine consistency. The way CX makes their arrows causes a very consistent spine.

There are, I'm sure, others that are very good also. But, I have no first hand knowledge of them so I can't speak intelligently on those.....