The VZ Hyperion is the old gen packs, which you can get for some steal deals from aircraft-world.com on the 'clearance' items. Definitely good packs, but in the long run, you are better off getting the G3 35C packs, actually underrated relatively compared to the 'old' C ratings, they can be charged 5C (have done so myself), and they claim that the G3's last 4x longer (cycle life).
But if you want to spend a little less get the VZ 4500mah 5s pack, and gear it lower than you would with 4s, will run great! They are $114 right now!
http://aircraft-world.com/shopexd.asp?id=4959