Control interfaces (noise associations)

[a_bit_of_liquid]

hello i just recently got an m-audio project mix and am using it with pro tools. i am not planning on using too many plugins, but mainly some good quality outboard gear.

my question is; speaking in SNR terms is the m-audio project mix better than say the presonus firepod or the mackie onyx boards????

i'm just wondering which has the least amount of noise.