Absolutely love this thread - definitely helped me narrow down and decide on my cans (HD598's) and mixamp purchase and am wrapped with the decision :)
Only thing that could have helped with the narrowing down would have been a rough price range beside each of the models - sorry if it's already been discussed.
I had the Titanium HD and the STX both installed in the same rig. I don't consider the THD to have enough power/amping for the DT990. I had the 600 Edition though.
The DT990 itself is a great choice for gaming, I would put it on the 1st place for immersive gaming. The T90 is the HD version. Can't recommend though unless you watch movies as well since most multiplatform games have their audio samples sized for the Xbox and its old DVD format, and all the others have to suffer for it.
The Titanium HD do not have a headphone amp I used to have one my self, creative need to fix their info on it. To remove that line form it. WIth the Titanium HD you will need to get a external amp if you have headphones that need power that card it self cant provoid. In this case that DT990 if its 250ohm or the 600ohm you would need to get one to get the most out of those headphones with the Titanium HD.
I have cutted it down to the DT990 cans to, but between the PRO 250 ohm and the Premium ones.
As i can read in the posts above i'm gonna need a sound card, but not sure which. I'm not sure which card i should pickup. And even not sure if i shall pick up a sound card or the Astro Mixamp:S
If it gonna be the Sound card, does it need to be the Essence ones or the Xonor, and which one? :S.
It's gonna be used for BF3 and the surround 3d positioning.
And again, thanks for the help and this great thread!! :D