I hate to contradict, but suggesting that a modern (last 10+ yrs) 600R or any similar track-purposed bike is a good beginner bike is something id have to disagree with. These bikes are meant to be ridden at their upper rev range, have comparably little torque down low, and have steep rake angles....the list goes on. The OP also stated they want to commute, which means they want comfort and some cargo carrying capability. Not the traits of a "R" bike. I'm sorry, but I'll respectfully disagree. Stick with something a little more street based.