I can't compare it to the two you mentioned, but I built my WR18 a few years ago and I love it.  It is very fast, tracks very well and handles any sea conditions with no problems.  I have not had any boats paddle past me, with the exception of the racing type kayaks.  The only issue I have had with it is that it is difficult to turn in the surf.  It really needs to be leaned hard to turn quickly and even then at times it is not quick enough.  I have been washed up on the beach sideways a few times :-)

Jae, thanks for you input.

Did you put a rudder, skeg or "none of the above" on it? I built my 17lt with a skeg, but I've almost never used it. 

Neither rudder nor skeg.  I would say it certainly doesn't need a skeg.  A rudder might be handy at times to turn quickly, but not necessary.