various nitro duck tanks
pure energy 68/45
Karni with e2 frame and upgraded front end.
Threads can be worn down kinda easy I recommend a thread saver.
Well I have used this tank as my primary tank now for a little over two years on several guns. The size I have is the 71/45 which is supposed to be the same size as a 68/45 though it is a little longer however I have never had a problem getting any tank cover over it. Many people complain about the reg having a slow recharge but I have yet to have a problem with it. The only problem I can see is the threads getting messed up. Well I have not had a problem with it cause I use a thread saver it could happen. However the reason that could happen is the threads and reg are aluminum instead of stainless steel. This makes the tank a little lighter than it's competitors though. When comparing the difference between my 68/45 crossfire and this tank you can tell this one is lighter.
If you are looking at getting one go for it. I give it a 9 because of the thread potential for getting messed up.