unless you know exactly where you want to go and that you will for sure get in I think that you should take both. It's better to have it and not need it, than to need it and not have it :D

if you know where you want to go and you kno which test they favor than i you shouldnt have to take both tests. theyre too long to be taking just for fun!

My parents said to take both because for one you don't know for sure what school you will want to go to so just in case you want to apply to a school that prefers one over the other you have them both. And you never know which one you will end up doing better on so if you can you should take both.