Most of the time people complain of getting a magenta cast, it's because they're erroneously "double-profiling", i.e. having both PS and the printer provide profile-related corrections, each not knowing that the other one is, so it gets done twice (which always makes things too magenta).
The "Computer Darkroom" web site has some good tutorials on exactly how to set all the print-related settings:http://www.computer-darkroom.com/ps7_print/ps7_print_1.htm
You might check the Computer Darkroom's instructions and see if you're accidently double-profiling somewhere. I believe that's why Michael suggests, "turn Color Management OFF".
Also, different raw conversion methods produce different-looking results because each assumes a different set of defaults for all the available settings. When one produces "duller" colors than another, it's usually because the first has been optimized to show you all the available color/brightness gamut to allow you to decide for yourself if you want to throw out any, while the less dull one is trying to make something that looks better "straight out of the box" at the risk of making changes that can be tough to undo later if you don't like its results.