I don't need a hand, i was stating observations. I packed some archives of about 250mb and sometimes i repack rar or ace to zip, and the zip always get as small. Most stuff ends up on my linux ftp server at first anyway, so i can repack rar to zip, just in case, because my (older) version of winace really can't handle newer rar archives, it sometimes shows no files in them or only one and will only unpack this one file in that case.
As i said i have no problems with rar, ace or zip. BUT others may have as most people have zip but not all have (or even know of) rar or ace. And the "better" compression is not really worth it, i just packed 313mb of ofp missions with best compression for rar and zip and the sizes were 293mb (rar) and 298mb (zip). Wow, rar is only 98,5% the size of the zip, not even 1,5% smaller than the zip, what an improvement...