What is important for an speedsail or just for going fast?

1. Profile
2. Twist
3. Flex

Those 3 things are giving the sail a feeling. There are several feelings, an sail with backhand, an very soft sail, a hard to start sail, an heavy on the hands sail, etc.
Full-race sails

1. Gaastra Vapor
2. Neilpryde RS Racing
3. Maui Sails TR-4

These sails are the best 'balanced' sails on the market. However the last 25% of the balanced part has to be tuned by yourself. The Gaastra Vapor is the easiest one to get balanced, the NP RS Racing is a it harder to get balanced. But the reward with NP is a bit better when everything is in place.
In general most fullrace sails got the most profile, some brands give their racesails an very low center of effort. Most speedsurfers are faster with a bit higher center of effort. But don't forget to downhaul your sails enough. For the Gaastra Vapor '07 I would say in overpowered conditions +1cm.
The Fast Sails for everyone

1. NP RS Slalom
2. North RAM F8

Most speedsurfers will benefit from these sails. These sails are very easy to get balanced, combined with an higher center of effort... When I heard of these sails I thought... poor marketing. But at my homespot, an local speedsurfer was instantly 5 km/h faster. I studied the sail, and it is very good. Both the North as Neilpryde are really good, and easy to rig.
Why don't the pro's use this sails, these sails have less profile, less speed on tight courses. So when you are going for the last 1-2 km/h or knots... an full-race sail will have advantage.
Freerace sails

1. Gaastra GTX
2. Neilpryde V8
3. North Daytona (s-type)

The center of effort is about the same as 'The fast sails for everyone', these sails are no widesleefs, and they definatly got less profile overall.
This sails are close to 'The Fast sails for everyone', the gaastra GTX is really the best in this class. It would be better to compare it with NP RS Slalom or North 8 RAM, but Gaastra put this sail in the market for freeracing. The GTX has a light feelling on the hands, combined with a lot of power to get you started, the GTX has one of the best gust handling. The Neilpryde V8 has allways been very good, sometimes they had a bit durability problems, but now at the moment it just looks all very fine. North Daytona... I just can't be very excited about this sail, allmost every time someone asked for my help with rigging last year it was an North Daytona ('07). The sail is not that bad when rigged right, but this sail is harder to rig right compared to my Gaastra Vapors, or even the NP RS Racing...

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