[cheeno50]

Which do you prefer and why?

 

[jodgey4]

I prefer the HE-400, though it's not as versatile due to a strange signature. It has better detail, a quicker sound, a bass sound I prefer (more control and extension vs. a bloated sound). Here's a review I did with the two. http://www.head-fi.org/t/726848/headphone-palooza-shoot-out-8-cans-reviewed-here.