Which one do you personally like out of those two? If you're comfy with a cheap-o, get it. Shoot and kill with that sucker!
Personally, I'd get a better used one for the same price but that's me. I used to think new too but I've had very good luck finding great used deals, because that's what people said I should do when I had the same questions. They were right. I came to love the Mathews Drenalin and Switchback. One for $400 and one for a trade value of $300 fully loaded. To me, both great deals.