Usenet used to be very good with a lot of perfect indexers. Nowadays it's virtually dead because content is removed so fast and only a few indexers left. I only use torrents (private).
I wonder if you can get some sales on usenet.nl ... who's going to pay $12 for a measly 35GB on high speed and 600GB on 2mbit(!!).
Not really a lot of experience but you should check out /r/usenet. Most providers removing an article in less then 24 hours since the dmca report so you will need to use 2 different backbone providers to get your file working otherwise it will be corrupted. That's what is happening to me at least.