I'm not sure "more bang for your buck" is correct, 2c-i is more potent per mg. 2c-b is nicer however, although I find the two very similar.
what on earth is "2c-b hci"? do you mean 2c-b HCL? that is just one form of 2c-b. The "2c-b" is probably 2c-b HBR. They are just two different salts of 2c-b, the HCL one will be slightly more potent, by like 15%.