I bought a new Zephyr 155 rotomold kayak this year. As my first real sea kayak, I researched for length (I wanted 15ft), light weight but affordable and suitable for anything from straight line touring to ocean play. With my Zephyr....i'm not disappointed! Tracks well with or without the Skeg. The phase 3 seat is easily adjustable and makes rolling a piece of cake. The only down side is you have to be sure the hatches are fit on correctly so they don't pop off.
Highly recommended!