I think you have to bear in mind that rotomoulded dinghies are improving rapidly - you just need to look at the Dart, Laser or RS ranges and see how they've progressed from small, singlehanders like the Pico and Topaz to "full sized" boats like the Xenon, Omega and Vago in a relatively short time. The Dart 16 has been around a while now and it certainly can't be state of the rotomoulder's art anymore. I'm sure I read that Topper are launching a range of rotomoulded cats next year (I'd guess at the London Boat Show in January). It'll be interesting to see how they go.
Laser claim that the new Dart 16X has hulls that are stronger and stiffer and almost 15% lighter than the original boat. So, presumably the technology has improved.
The new Toppers are also Yves Loday designs and should be interesting.
