Purchase advice 997 Carrera Cabrio or Carrera S Cabrio

Hello ! Have a question to the community and experienced ! Put me next week a 997 convertible too ! Have the choice between a Carrera with Tiptronic and a Carrera S 6 speed switch . How do you see that, is the difference regarding driving performance really serious or is not much difference here ? I heard the Tiptronic S should be slower than when I switch the 6 gear itself … .. Is there anything about it ? Interesting are also sprints from 100 to 200 km/h. A friend has a 335i limousine with software optimization (360 hp) I think I’ll be hard with the Carrera 325 hp or ? Be pleased about your help ! thank you