Which racquet is better for me? Babolat Pure Drive Standard Cortex,Standard GT, or Roddick GT Plus?

I have a Standard Cortex but I'm not sure if I should upgrade it to a Standard Gt or Roddick GT Plus.

Just keep your racket, the difference between the rackets isn't enough to consider switching just because you have the old model. I hear the GT is a little bit better, but just save up your money for a racket that you are obsessed with.