Hi...i planning to get either daban or DM strike freedom MB ver.

Feel question as i am new to this:

a) Although it says MB ver., it simply means it is a MG type (plastic) that mirror MB version scale and detailing but non of the parts is METAL right?
b) Do i still need extensive colouring if i go for those?
c) Daban and DM, which one u all prefer (i know is subjective) but preferably those who have to give comment?
d) I know MC is also coming out Strike Freedom + wing, may i know what is the different between MC and the other both? Issit full metal and pre-assembly?

Thanks