Giganews have upped the bandwidth limit on their Silver package to 50GB, going up from 30GB, with the price staying the same at $12.99 a month. This puts this mid-range block package much more inline with other offerings from the likes of Newshosting who are offering an unlimited amount of downloads for a dollar more a month with their NH Unlimited package (albeit with about 200 days less retention).
Of course, with Giganews it is well known you are paying a premium for not only world class 24/7 support, their reputation as one of the best providers but also their leading retention of 630+ days. So for those looking for longest retention in the industry and a decent amount of bandwidth at a low monthly cost, this could definitely be the package for you. If you're willing to shell out a bit more for SSL and unlimited bandwidth usage then Giganews Diamond package is what you're looking for (it also comes with free unlimited SSL'd VPN access for full web anonymity) (but it is quite a lot more at $30/m).