We were sailing on Blade 777 at the GC for 5 days and we were lucky to get a test ride on the Falcon and the Viper.
At home in Switzerland I sail 18HT Eagle fullcarbon with a M20 Marstrom mast.
I feel in no way that I'm a catamaran expert, but here is my little resume anyway...
We test sailed all the boats two up, so take my comments with that in mind.
The Falcon and the Viper felt roughly the same on the water.
They have much more volume compared to the Blade.
This made it feel like it is a much bigger boat.
Both boats felt very solid and stiff.
The helm felt light and they tacked better and faster than good ol 777, because the hulls didn't sink so deep in the water.
Upwind in the little chop there was, both boats were stable and didn't bounce. The inverted bows seemed to work.
Downhill is when they both really start to shine, the bows staye out and it was much easier to stay in control than on the Blade.
I liked the Viper Cunningham System 16:1, very little friction and easy to inspect.
I liked also the Godall mainsail. It was very powerfull and could be still trimmed flat when the wind was on.
If the wind is on, it was easy to pull the mainsail flat on both boats with the Cunningham/downhaul.
I liked the Falcons weight. (I’m 18HT sailor and don’t mind carbon ;-)…).
The rudders, stocks and blades are much lighter on the Falcon compared to the Viper and seemed to be perfect sized.
The beams and rudders on the viper seemed to be a little overbuild.
IMO The Blade is still an awesome boat and the best single hander compared to the newer ones.