Welcome to Bike Forums.
Sounds like a tough choice.
I've owned both bikes (2009 models) and they are both good bikes. I liked the Kona a little better than the Giant. Others will have a different opinion.
Good luck.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.