Replying to Pros and Cons of Center Mounting?

I think for this season i have narrowed it down to either the 179cm PE or 175cm TM, ive just got to see which is easy to get by me. My next question is if you recommend center mounting the skis. what are the pros and cons for doing it?
what i have heard its better for rails and swich landings (of course). any other reasons?
Im gonna be skiing strickly park on these and a little big mountian when i go on ski trips. but its basically just for park
-jason-

freedom, tolerance, love and peace