Do I need to swap the rotors?

I have Tektro Draco Hydros on my GT and after much fettling, pad resurfacing etc I have come to the decision they are just pants. No initial bite or progression and about as powerful as Mr Bean. So....I am going to swap them for some Avids / Shimanos - the question is do I have to swap the rotors too, or can i use the original tektro discs and just change the callipers & levers?
Is this a stupid qiestion? Maybe - I will soon find out!!
Is this a stupid qiestion? Maybe - I will soon find out!!

My biggest fear is that should I crash, burn and die, my Wife would sell my stuff based upon what I told her I paid for it.
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There is no secret ingredient - Kung Fu Panda
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Parktools
Cheers!
But I think your problem may be contaminated pads/rotor, so make sure you clean the rotor first if you get new brakes.
VOODOO CANZO
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Still I'm surprised you can't get decent performance out of them, my Aurigas weren't exactly cutting edge but they were perfectly decent. Definately echo what SS says, it's always possible the issue you're having lies with or has affected the rotors.
I have fitted some new clarke pads today and given the rotors and callipers a danm good cleaning with muc off brale cleaner. will see how it is tonight on road ride.
Cheers for the advice everyone!!