I stick to WinAce. It was a little buggy when it first came out, but it's come a long way. The only thing I still need another archiver for is certain spanned RAR archives, when they are done in "filename.partX.rar" format, WinAce doesn't know what to do. But, I'm sure they will add that functionality sooner or later. Of course, if people would just archive things correctly from the beginning, it wouldn't be a problem. :P