I tested the Futura here in WA against the Isonic and it is clear that Futura is a very easy board to handle in any conditions.
The main difference between the 2 boards is that the Isonic will deliver a bit more "all round" race winning style, because you can really push them with great speed slightly upwind and pass your competition. On the other hand the Futura is really nice off the wind (with the narrower tail)
If you were not directly competing, then I would any day recommend the Futura range. Speed is similar as Isonic (especially a bit off the wind) and the ride is very comfortable.
You wont be disappointed with this Futura 111,,