A similar topic
on this forum recently asked about the Talon and the Fearless.
To paraphrase what I said there...
...The Fearless is less universally accepted, but is incredibly popular with people who own one. It is geared towards "on its back" tricks, especially turtle based moves - it'll sit there for hours and won't rock out when you least expect it.
Much like some Prism offerings, it will give up great flying if you fly in a similar way to it's designer. On the other hand, the Sea Devil range are much less flying style dependent and more user friendly in terms of "what can Joe Average get out of this kite?"