Danno,
I just want to add to Josh's comments on the Nacra 5.0. I had one as my 2nd cat--I wish it had been my first and I also wish I still had it. It is incredibly versatile, easy to sail fast, easy to handle alone (I righted mine several times with just a righting line at 180lbs), handles heavy seas well, and looks good as too. It has many aspects of its design that are simply superior to the P16 and H16. I purchased mine used and had no problem finding any parts.

Also, they can be gotten very inexpensively used and are available with even more goodies new (Nacra 500).

Good luck,