Without bringing in my personal opinion - which is admittedly very biased- i will confer to facts and third parties:
there are a heap of reviews on this page from magazines:
http://www.severnesails.com/2012/media/test_result.phpwww.severnesails.com/blog/who-wants-to-go-fast-with-no-camsThe NCX is consistently reviewed as the fastest and best handling No cam freeride in magazine tests - and uses a good chunk of the DNA that is making the Reflex race sail program the fastest and most sought after race sail on the market.
Usually at a price tag that is within $50 of most other offerings in the market. But probably more expensive than internet direct offerings. Its certainly great value for money - but not a cheap offering.
As with any sail -You will need the correct mast curves to get the best performance.
If you are looking for more durability / low end grunt - then the all X ply Gator is the option to look at.
I was on a wavesailing mission in Vietnam a few years ago - and had some good fun wavesailing - but one of the most memorable sessions i had was on a 7.5 freeride sail and a 110 litre fast freeride board. Jus tmagic - it felt like i was sailing "downhill" the whole time
There are quite a few demo NCXs 7.5s / correct masts floating around at shops - especially in Brisbane and on the Sunshine coast -so you can actually ride one before you commit to anything.
- No cam freerides are awesome sails to enjoy pure blasting on.
Do your research , find your desired price / performance point and make an informed decision. Hope that helps and good luck whichever way you go.