Nah, i know it cant do 180kph, but 130 is certainly possible! even more on a downhill. Perhaps any GNs you may have ridden were a little sick? Mine is quite good as a learner bike in my opinion, and definitely a step in the right direction. However i do see little point in "upgrading" to another 250 when i could get a 400 or 600 straight from the get-go.
I'm not a "n00b" at all, and i do know for a fact that it is not just "indicated speed" as if it was, then how come i dont get passed continuosly? Especially following you're line of thought that "most cars cruise at 120kph".
The main thing about a 600 that would strike me as a worrying difference is not the dynamics, or the extra power. I don't imagine that being an issue at all. The biggest thing for me would be the weight difference, and with most so-called "proper" 250s weighing around the same as a GN i see no advantage from buying one.
Besides, if i want to get my thrills i'll go racing in my car, seeing as it is quite literally a "cage"

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