Looks like fun could be had in either.
Keep in mind that while some are helpful, some salesmen might be trying to unload boats (such as the not as yet popular SOT). Carefully consider what they say and do a lot of your own research. Case in point, a salesman at a reputable local shop had my friend, who is a beginner looking to buy her first boat convinced that she NEEDED a glass boat and that rotomolds were just no good and unsafe because the plastic deteriorates over time. He basically drew the picture that if she bought plastic she'd have to replace it within a couple years or she would be on the bottom and that she should never buy a used plastic boat for that reason.
I would have hit him with the nearest paddle.
Test paddle. You will be amazed at how differently boats feel. As a plug for my boat:
http://www.wildernesssystems.com/pro...mi_140_touring
Really stable, heaps of volume and good for the bigger bloke. Seat is heaven for the ass with it's 3-way adjust ability (it even has a mid-back support recliner setting for that lazy day). Not the fastest boat, but relatively good maneverability (I have even paddled light class 3 in it).
Just for fun: