Drop Forwards: Please Help!

[FreakinOutNewb]

I recently got my first gun, a Pirahna STS G3 VF. Right now im using a 12oz CO2 tank but later i might buy a 16oz. I'm now thinking about getting a drop forward and I have narrowed it down to 2 choices and so I need your help: Psycho Ballistics Drop Forward (please recomend length or watever), or a Custom Products Flame Drop. If you know of another kind that you think would be good for both a 12 oz and a 16 oz please say so, otherwise give me your opinion over PB and CP. Thanx.

[AK47]

What do you need more out of a DF, the tank lower or farther forward?

[FreakinOutNewb]

I don't know, what would you suggest for a 12 or 16 oz tank. also, please someone tell me: is a 16oz any longer than a 12oz cause if it is im not getting it. thanx. forAK47. I definately need my tank lower because I aim with it under my arm and not on my shoulder so lower is a must but i dont need it oo much farther forward. so r u suggesting now that i go with the flame drop. also, which is better, the CP flame or the other flame drop (i forget what its called)