The XX75's will do the job hunting thats for sure, but I just prefer the extra XX78's. If you plan on shooting 3D with aluminum arrows and plan on using the 12 or 13 series(such as 2312 or 2213) stock up because it doesn't take much to bend them.

One more thing I'll bet money on...........take a dozen of general stock XX75 or XX78 and do the same on non-hand picked all carbons(any brand or model). After cutting them, installing the components and fletching, and tuning your bow(s) to shoot those arrows, generally the aluminums will shoot tighter groups because of greater consistency in spine, weight, and straightness.