First, please bare with me as I am tanktarded.........

I couldn't decide between a 1/24 vspro and a 1/16 HL Pershing w/ S&S, so I'm just going to buy both and quit stressing. I am going to order the airsoft version of the VSPro from Toyeast. I'm just getting into tanks and have no idea one tank from another, or "tanktarded" as I call it. I think I'm going with the Leopard because I like the idea that it has functional lights front and rear. I want the NATO camo, but I have no idea weather I should get the 2 A5, or the 2 A6??

Can someone explain to me the cosmetic difference between those 2 vspro models? I know the 2 A5 has a shorter cannon than the 2 A6, but is there any other major or minor cosmetic differences? Also what is the real life signifigance between those 2 tanks? Were they used for different things in the real world?

thanks,
eric