Re: which one should i get
The second one has the E6600, which is better than the E6400, maybe you got them mixed up. The second one has a better mobo in my opinion. It doesn't come with RAM like the first one, but it takes DDR2 800 which is much faster than the 533 that comes with the first one. So it's up to you on how much you want to spend, but to answer your question, the second one is "better and will run faster and better."
But God demonstrates His own love toward us, in that while we were still sinners, Christ died for us.