SOLD SOLD SOLD!!!!!!!!!!
These are two great tanks that I have taken great care of. They are all currently out of hydro as of last year. They are 5 year tanks and were made in 2007. The Pure Energy one is low pressure, and the Nitro Duck is high pressure.
As far as the infamous question, "Which tank is better for my gun?" goes, here is my rule of thumb: If you are shooting any kind of an Angel, you will NEED low pressure. If you are using any other usual Tournament marker (Smart Parts, Ego, Dye/Proto, BL, Empire, Luxe) or lower end gun (Spyders, Tippmans, Etc.) high pressure will be best, but low pressure will work just as well. The Angel is the only gun that I know of that is picky.
$100 for both
Nitro Duck HP tank SOLD
PE Low Pressure Tank: Sold