well my mate wrote off his 33 while on his P's (honestly not his fault, but the other guy kept driving after causing the accident), the police confirmed his story and Just Cars paid him out in full, althought they could have easily d!cked him.
I was 20 when i bought my 33 and decided to go with 3rd Party. Figured after 2 or 3 years, the money i spent on insurance would be about the same as it'd cost me to get any damage repaired.
After 12 months, the premium came down a bit, I'd done a few mods and decided instead of paying $700 for 3rd party, for a few hundred more, I may as well just go full comp. Makes me sleep a little easier 'knowing' that i'll be left with more than my d!ck in my hands if the car gets smashed/stolen.