I personally like center mount or close to it for a couple reasons:
In the park, bc booters, or any other air time/rail situations, you can whip your skis around a lot faster. Also, if your into dropping cliffs, a longer tail is going to be more stable. Lastly, and most importantly for me, there are just SO many more possibilities on a close-to-center ski. You can slash, smear, and butter turns in ways not as possible on far back mounts. It has allowed me to be much more creative and have more fun on skis. Also, if your worried about losing float, then just get skis with big rocker (i.e. hellbents, eps, caylors, bent chetlers, etc.) and it's not even a big problem. Just my two cents.