But... why?
Linux is not Windows...
There is absolutely no reason to download directly off the "manufacturer's" website. Every mirrored download site will have MD5 Checksums, so if you are truly worried about the integrity of a mirrored download, just do an MD5 check against the MD5 checksum file on the "manufacturer's" website.
Personally, I use
http://mirror.ac.za
There is not one single reason I could think of to waste additional time (and international bandwidth) on downloading internationally when we have many perfectly good local mirrors.