Both S&W and Colt are great rifles and I doubt you could go wrong with either one. Both have their own features etc and both will fit your needs and wants.
I shot a few Colts and S&W's that belonged to friends and I bought the S&W Sport and have never regretted it. I do intend to buy a Colt Match target model in the near future just simply because I would like to own a Colt and be able to truly judge them for myself.
My Sport with a 2x7 Leupold scope will shoot sub MOA @ 100 yds all day long with its 16" melonite barrel. Will the Colt match target do as well ? I am going to find out for myself.