Fast Medium wind board for heavyweights

[jrk]

Hi
I am looking for a fast exciting board for use in medium winds, 12- 25 Knots.
I am looking for something with enough buoyancy to get out into the wind and back if required.
I am 110kg advanced intermediate who will be using sails from around 6.5 to 8.5 m free race sails and will be using it in coastal waters with chop but not major swell.
The boards I had in mind were either S Type or i Sonic.
Could you advise the board that would be most suitable for general fast blasting around.

JRK