Hard Decision to Make, Please Help Me!!

I have checked out both the Time Capsule (2 TB) and the My Passport (1TB) and I wasn't sure if I should get both like I was planning on doing or just buy the only one necessary. If your wondering, i dont need this for work and such, I just use the computer for internet, mail, music, ect. so my question is: Should I Buy Both or just one of the two, and if so which one of the two?

QA Apple Time Capsule

QA Apple Time Capsule

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