I have to consider OPS, it has an incredible bonus point system, at the beginning you can cross-seed some famous web releases, and then you will get a lot of points for the time you seed torrents. In less then 3-4 weeks you can build a lot of points in order to trade them to personal freeleech. If you never stop seeding, you'll have basically infinite download after a few months (depending on the size of your files, it can take more or less).