In reply to Alan M: I agree with Hotbad about the rudder v skeg pros and cons. My boat, an NDK Explorer, has a skeg and in the UK I have never used a rudder. Just come back from three months in NZ where we hired sea kayaks and kayaked various places on the South Island. All rental kayaks have a rudder. Yes they are good if they work but our guide broke his cable and was rudderless. Luckily he was BCU trained so he wasnt clueless and he edged and sweep stroked his way back to base.
I also found it difficult to paddle hard with a rudder. I 'cycle' my legs when I paddle if I need maximum power, try cycling with a rudder and you just go side to side very quickly! Wasnt happy with that.
You could maybe try going to as many of the sea kayak symposia as you can this Summer and try out lots of boat types. OK it'll cost you to do this but better that than spending money on a boat that you ultimately dont get on with. Plus you'll meet very nice people and will probably come to the right conclusion that composite is much better than rotomoulded!!