So here's my review on BigUpload.com, which I'm trying right now.
Uploading a 170 MB file, 200 MB is their max limit.
A plus: They've got a progress bar that works in Safari. It's not pretty, but it works. There's also nice number-stats, and such. I'm uploading at a steady 200-300 KB/s. Don't know about download speeds yet.
From my previous post on online file dumps [here], files should stay online as long as it's downloaded periodically.
Looks like someone's started up a site promoting file dumping services:
Looks biased towards bigupload.com though. Hmmmmm.