indeed seed.st is very good.
If you want to run SB for just 1-2 months ...
Specially This plan : 100GB SSD | 1 Gbps - Unlimited bandwidth + torrents - $14 per week, $50 per month ...
... Will be excellent and you will easily achieve 3-4 TB (even more) on
may be all trackers.
1) If you are over all present on max 5-6 trackers.
2) If out of those 5-6 trackers, at least 3-4 trackers have heavy/moderate traffic like IPT
3) And if you know what torrent to pick.
More reviews for seed.st :
http://www.t-i.com/seedbox-reviews/162786-seed-st.html (Google T-I for full link)
Other option I would recon is whatbox.ca. Check out their plans too. However they have bandwidth caps.
More reviews for whatbox.ca :
http://www.t-i.com/seedbox-reviews/96114-whatbox-ca.html (Google T-I for full link)
Plus the links I posted, you will find other SB providers' reviews too. Do check others out also.
EDIT : Would agree with @
xtremevicky too. trackers like IPT, FL, DT, Bwt have heavy traffic. With SB you will achieve super humane ratios over there definitely in 1-2 months, if again points 1,2 and 3.