I'd take Reid. In his prime he was durable enough to handle AA's power, and outside of power, AA had little else.
I like Reid by UD. Abraham was a good fighter at 160 but didn't have nearly the same pop at 168. I absolutely hated his style with that high guard and wide looping shots. Reid was pretty danm good at 168 and really was robbed against Abraham's mentor and stable mate Sven Ottke.