Rode on the back of a CBR 900RR to 130 mph!

[Hethj7]

Although dirt and street bikes have many differences, a 600 cc is cool too. I learned on a 600 with really no prior riding experience. I just know that once I sat on a 250, it would have been much easier. It is easier to "manhandle" the lighter 250 if you get yourself into trouble than a 600.

Like I said, the 250 is easier to learn on, but as you and I have both mentioned, you outgrow them quickly. The 600 will be a good choice.