External soundcard/DAC for Sennheiser RS 175 headphones

[Nebell]

So I'm getting rid of my integrated sound card as I'm unhappy with Creative Command app that is very buggy for me (currently using SoundBlasterX AE-5 Plus).

I've been looking at:
Creative G6 (€150) (I'm a bit wary of their drivers as they have sucked for me even with older Z and ZxR cards)
Sennheiser GSX 1000 (€200)
Astro MixAMP Pro TR (€150)
iFi Zen DAC v2 (€190)
Your alternative choice?

As I mentioned in the title it's going to run RS175. I'm mainly watching YouTube (music, videos) as well as gaming.
My budget is no more than €200, but maybe I can find a good deal on something more expensive than that.
I don't need a huge audiophile sound, but something that sounds nice compared to onboard audio.
And I'd like it to look good on the table

 

[TrunksZero]

I know it's a silly question, but you have already tried updating SB Command, and the AE-5's drivers, from SB Command's settings menu?