I just got the X25 less than a week ago. Now that I've seen the testing on this 510 and the Vertex 3, I'm debating returning the X25 and going for one of these

I just got the X25 less than a week ago. Now that I've seen the testing on this 510 and the Vertex 3, I'm debating returning the X25 and going for one of these models. I can preorder the 510 from Amazon for 295, still looking for someone selling the Vertex 3.