Well, one is a recurve and one is a r/d longbow for starters. Wider limb profile on the arroyo with thinner limbs. It really depends alot on your shooting style. Typically a little more mass weight in the riser and a beefier grip on the arroyo, but you can customize that abit. Static tips on the arroyo, which I believe was quite abit faster in my bows. I felt that the shrew had a little better 'pointability'. For these bows I think that you would really be better off trying them out if you get the chance. Once again, both great bows but very different.