SOB when you research the first 2 DD's you get torpedo's, which is tier 2. Then on the tier 3 Japanese cruiser you get torpedo's, tier 4 American cruisers also have torpedo's, fully upgraded tier 4 cruisers have fighter planes also. If you want a DD with good guns go American, if you want long range torpedo's go for the Japanese. Learn your detectability range on your DD's also, staying out of range is a must in your Japanese DD's. American DD's just keep firing your guns and firing your torpedo's to keep the enemy at bay, since most of them only have 4.5 to 5.5km. One other thing about DD's, turn your AA off or you will give yourself away really quick when in a higher tier game that has a lot of spotter or other planes.