Guys, i had a pair of Kaves for 70 days linked to a Xonar DX. They are built very very well and i found them very comfy. I could wear them for hours. Bass is pretty deep.
I found that music sounds not so good through them. The drivers sound as though they are further away from my ear than they really are. I'm not joking, but i spent hours upon hours messing with different settings in the Xonar control panel trying to get the music sounding close to my cheap and tatty Sony MDR XD200's. Needless to say, i failed. They really aren't good at music playback IMO.
Gaming is slightly better sound quality wise, but the positional audio just didn't feel convincing enough. I was never really
that happy with the Kaves if i'm being honest. I sold them a few days ago at a £15 loss.
Last week i started looking into the virtual surround option. I remember Uriel saying to others how so called 'real' 5.1 headsets are old tech and a waste of time these days. I chose to ignore what he said simply because i thought "surely 3 drivers in each ear is better than 1 driver, it's gotta be?"
I can now totally honestly say that i wish i would have listened to him when he said it, and he wasn't the only one saying it. What he's saying is spot on, and he's said the same thing a 1000 times on here

That 'virtual' 5.1 is in, and 'real' 5.1 is out. Why do you think all the latest new headsets are using USB and virtual 5.1 or 7.1. Non of them have the old 6 drivers any more, they use 2 drivers.
I'm now using a pair of quality headphones along with Dolby headphone and it is much better than the Kave system in every way. I was blown away at how it can replicate a 5.1 environment through just 2 speakers. I'm also loving the quality of the drivers now too. Music isn't a treble fest any more. The sound is not as tiring or painful any more. It has depth and a ton load more detail. Positional audio in games is much improved as well.
My advise to you PhoenixSP is to go with some good quality stereo headphones. Goldring DR150's would be a good buy for your first set of cans. If you can stretch another £20, get the NS1000's and FiiO E5 amp. That's what i'm using right now, and for the money and what a lot have said on here, you just can't beat them right now at this price. It's the most common set up on these forums you'll find. There are many happy users of this set up.
Sorry if this sounds like i'm going on a bit, only i was in your shoes back in november and i made the wrong choice.