Penatration or Damage

TeriyakiTanker: Unfortunately I am going to tell you that for me it depends.  From an overall perspective I really like penetration but it also depends on if the penetration difference is important or not.  Also you need to consider if your premium ammo can make up for the difference and how often you would need to use it depending on what tanks you are likely to see.  Can you tell me what tanks you are looking at in regards to this?