ORIGINAL: charles.y
Binary is just a numbering system used for modern day digital electronics which makes numbers crunching computation much easier and faster i.e. either 1s or 0s.
Binary is a numbering system but it is the one used in computers because at the lowest level of storage they can only handle on or off. On or off being digital. I knew Nick meant analogue and was only yanking his chain []
As an aside one of my favourite "smart" signature lines from a forum is "there are 10 types of people; those who understand binary and those who don't" [][]
Back on topic:
The 964 and 993 can have rust issues also, but it tends to be around the screens which is both easy to spot and hard to bodge repair effectively (and can be fixed properly so it's no longer a worry); I got the front screen corners on my 964 fixed perfectly with new metal for circa £600 - a different league to new kidney bowls. The reason they don't rust in the kidney bowls I believe is that they have plastic arch liners to stop crud buidling up in the nooks and crannies of the front of the rear wheelarch whereas the impact bumper / torsion spring cars are open under there.
If you want a C4 it will be more like an S2 than the original 911 in my experience. I took my 964 C4 to the 'Ring and after a few laps I went for a passenger lap in a mate's 3.2 Carrera. About half way round the first corner when I felt the weight transfer to the back end I realised why I wasn't so in love with the 964 as I had been with my own 3.2 - the 964 wasn't a 911 (in the way I perceive a 911, at least).