I actually like Sasuke better as a character I jus think Neji would be the one to finish the job in the end.Taijustu wise Neji owns in that department. Speed wise Sasuke might be alittle faster than Neji in the beginning but would soon his stamina would drop. Kaiten would be Nejis answer to Kaiton and Chidori.

If Sasuke curse seal level 1 or 2 then Neji would lose