EGO Type A vs Type B question

[Digame]

I have decided to go with an Ego C and was wondering what the difference is between the Ego Type A and Type B tank. I read that the type B has a 2 ml capacity.
Is there a difference in length?
I am trying to go with a smaller unit as possible b/c it is going to be in my pocket.

 

[DantesInferno]

You know I'm not sure. I have a type a cone. I highly doubt the type b is any bigger. I'd guess you'll be pleased with either one. Just make sure all ur parts are either type a or type b.