Um, without a regular account, you barely get limited speeds... My regular acc and premium speeds are barely different, maybe 100kb diff... being at like 1.3mb/s with premium.
I never have wait times for files since a while ago... I think they got rid of that...
Filesize limite with a free acc is 1Gig at a time, where ass premium is unlimited... But few people upload shit over 1 gig...
As for limits between files... I rarely get those even with a free acc... I think it has to do with my DL MAnager, not sure... But meh..