I tried Sonic-News for a few weeks back in May and June of 2011.
My brief notes show only that the service was unreliable with the servers having been frequently down and unavailable, and support slow or unresponsive. But it's been 7 years and things may have changed as it appears that they are still in operation.
There is some information to be found on Reddit which you might find of interest, including the following:
Usenet Services Map (Wiki)Usenet Provider with no DMCAGood luck.
MS Windows 10 Pro 64-Bit I- ASUS P8Z77-V LE; Intel i7-3770K 3.5 GHz; 16.0GB DDR3; 500 Mbps cable internet.