The K95 Platinum doesn't really offer anything more than any other K95. In fact, IIRC, it offers less macro/programmable keys.
Just make sure you like the switch type of the keyboard you get since there are a few types to choose from, and some are noisier than others by default. Also make sure the key layout is one you like as there are some variances out there around the <enter> key.
On a personal note, I'd side with the Corsair or Ducky keyboard myself. (The one I bought myself, while not listed here was the Cougar 700K with its split spacebar (spacebar on the left, macro/programmable key on the right)) Budget wise, the Ducky sounds better.