i hate them both. i mean, how much space do you actually save?
but overall like winzip better, i wanna click on a file and have it un zip/rar. and rar seems to take longer. but again i generally dislike both.
what i really hate is when someone zips a 3mb file, and it unzips to 3.1mb, its just silly, you spend more time unzipping than d/ling.