As someone new to the mac world (not even a member yet; still waiting around to make my first purchase), I've done a good deal of reading up on various mac products, particularly laptops. One thing I've frequently run across is the poor wireless reception/signal strength that powerbooks get. I haven't been able to find any definitive answers as to what the general consensus behind why this is, so I'm hoping to find some info here. Today at CompUSA, I looked at the Airport program info for four of the five Mac laptops, as they were lined up next to each other. As I expected, the 15 inch powerbook had poor signal strength, the 12 inch powerbook was fair/average strength, and the ibooks were both excellent. Is there a general consensus as to why this happens?