Its an HPA tank, I really cant see any advantages in it over another brand.
None that I ever saw.
I bought a beat up, dinged bulldog 68/3000 fiber wrap for 80 bucks when i got my omen a year ago. Payed 80 bucks for it, and I think it was worth it. Theres not much i can say, its an hpa tank. It never gave me any problems, not one, filled perfectly every time, never leaked, kept my promaster running +/- 4 fps over the chrono, no complaints.
If you happen so see one for cheap and need a tank, I dont see any reason not to buy it other than maybe finding a better deal.