Just my 20p worth....
I have just sold my 07 750 for the ZX10. I track day'd the 750, and its a perfect handling bike, I did nothing too it, and it treated me well and from what i can remember, in the 2 years, it never let me down (handling wise).
I've had my fair share of writing off bikes, Z550, ER5, ZX7R, CBR600F and my worse accident I broke my back (compressed a vertibra)!!!
Before you get another bike, get some advanced tuition!!!! ROSPA, BIKESAFE, IAM, or a private company like Rapid Training (search google), and do some reading - Roadcraft (police handbook), Twist of the Wrist (racers manual used by California Superbike School).
Seriously, you may think that advanced riding is for old men, but if you can pass the RoSPA test at high level, you can apply this to your illegal rides and at least your'll potentially be riding safer!!! even if it is 150mph down a country lane, wheeliing of the crests and jumping hump back bridges!!!.......(As a RoSPA GOLD holder I'm not aloud to do this any more
)
Anyway, I'll stop bleating, enjoy and keep it rubber side down.
regards
Neil
PS: At least if he drops the GSXR while training, he wont write off another bike!!!!!