Paul, which one would you say is better?
I have always done the 24hr, but next year we are doing the classic, a month later.
The Classic is my favourite out of the two events, though there is not much between it.
Last year at the classic there was a race/heat each hour so there was something different to see ongoing, plus the history that goes with with all the cars is magical.
Plus, when travelling down to Le Mans with all the classic cars etc it is possibly better than the track event itself....
Like any event though if the weather, accomodation and the company is good then you can't go wrong.