After having searched the forum and Google, I couldn't find an explanation of the difference between 125 and 250 cc displacements. I'm 5'9" and 130 pounds or so, and want a bike that can go on highways without problems (going home on weekends from university is about an hour and a half max) but also motor around town. I've looked at the CBR-125 and the EX250 Ninja and they both look to be good starter bikes. I'm looking at buying used and they both run about 2500 used in Toronto Ontario. Is there any other criteria I could use to help me decide which one is appropriate? Thanks.