The Dart 18 class is NL is indeed a very attractive group. They are not too large but very active and good fun. None of them sail with a spi however and in the past we have had several reports that Dart 18 doesn't take well to the spi package at all. Apparently it is to slow in turning and to narrow up front to effectively ride the spinnaker well. I think the Nacra 5.0 or 500 holds up better on adding a spinnaker.

Personally I agree with everything else said by others.

Wouter