Works like a charm, no doubts.
My opinion is that it replaced WinRAR years ago, better compression, faster speed. I once compressed my HL2 Ep1 SAVE folder from 700 Mb to 12 Mb with 7-zip, while WinRAR would shrink it to 40 Mb only.
[FONT=\"Comic Sans MS\"][SIZE=\"2\"]7-zip[/SIZE][/FONT] forever.