Stargate SG1 or BattleStar Galactica?

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Well, i can say that i've watched all the season from both of these Tv Series, and i think it's quite hard to decide which one is better. Stargate definetly has a longer history, i mean half of season 10 has already been released, and they've always managed not to become boring or repetitive, but BattleStar Galactica is also very interesting. I'd like to see your opinions on this topic :D thanks.