Cat5e vs. Cat6 new network

This is a very basic networking question..I just need some good additional input. I am trying to convince my boss that Cat6 will be the best route to go. My company just built a new office, this building will have 25 drops no more that 91 ft at the longest run. With the advancements in technology I think that the Cat6 will be more efficient in the long run compared to the Cat5e. Any input i can get on this, will be greatly appreciated!!

thanks