(Kenpo) Randy Jones wrote:

I have unziped thousands of files using the built in zip and never once had to do it a second time. It is about as idiot proof as it gets.

But compared to any other expander software its extremely slow, try unpack a 700Mb zip for example, on my machine with winzip it takes a couple of seconds, but with Windows Explorer it can take between 15 och 30 minutes to do the same. As for the original question, it seems Rar is somewhat more resilient against bit errors in transfer or storage and also have better tools to extract what was usable from a damaged archive. At least it was so a couple of years ago. Well that's my 5c Ulf Rosvall