I was looking for a nitro tank to power my M98 Custom (This is before I bought my BKO), when I came across the Air America Me'lee tank.
I had read a lot of good things about the Air America tank, from the consistent flow, to Air America's lifetime warranty. Also the Pro shop which I purchased it from recommended it and it wasn't that expensive (I paid $130 for a 68/3000). The Me'Lee Regulator is preset to 800 PSI.
After a few days, I took it out to the field to try it out. I hooked up my tank and went to the chronograph and found that it was consistent (+/-6 FPS) over the chrono, and suffered no considerable shootdown throughout the day, which made me very happy.
I have not had any major problems with it since I have bought it, so thats another big plus.
Its a steel tank, so its heavier than fiber wrapped tanks, but thats not a big deal to me since I am a big guy and can handle the extra weight.
If you are looking for a good tank at a good price, I would recommend this tank. It is consistent, has good air flow and is backed by Air America 100%%