I personally like the 1902 better... but there are those that prefer the 1901 for matches.  It's all subjective.  I will say that the pop-up "Sgt Peep" on the 1902 has a hopelessly small aperture (0.04 dia.).  Fortunately, CMP rules allows for a modification of the sight aperture by 0.1 dia. I replaced my original rear sight with a spare that I didn't mind modifying, and then opened the peep up to 0.07, which is about as large as you can go before you risk damaging the metal plate.  At 0.07, the sight is vastly better for match shooting!