I'd lean towards the Antec DF myself. Seven fans... 3 front 120's + 2 rear 120's and 2 top 140's = some nice air movement. I would think that this would take care of your case temp issue. :)
Are you going to be overclocking? I think these be fine at stock speeds and would work well for you at there listed speed, but I am not sure how these would be for overclocking though.
I like my MSI GD65 so far. I had originally wanted an Asus but was unable to find one at the time.
I am happily clocked to 4.6 w/HT enabled on my 2600k@ 1.32v. with all C-States enabled. The GD65 can hadle overclocking pretty well and I have not had a stability issue with it. :)