I know people who have started on 1000's and I even know one guy who started on a 2008 Hayabusa.
That is alot of bike to start on but he has been riding it a few months now and has been doing very well.
On the highway, in a straight line, the accelleration and the brute force of the 1000's cannot be denied. Its a blast. But on the windy roads, you will definitely enjoy the 600's alot more. Recently, some friends and I rode into chaguaramas to Power Boats. The bikes present were, one 2008 Busa, one 2009 GSXr 750, two 2007 R1's, one 2008 R1 and two 2008 R6's.
The first bikes to arrive at our destination were the R6's. Coming out of chaguaramas the first two bikes to westmoorings were the R6's.
One R6 rider has been riding for about 3 years. The other R6 rider, (me) has been riding for a few months. We had to stop and wait for the other bigger bikes to catch up.
