Yes I totally agree that sound quality is subjective...to a point.
I just upgraded from my X-Fi Audio to a M-Audio Firewire Solo audio interface which I bought new for £130.
Admittedly, this is slightly more than one would normally pay for a gaming card (although I have mentioned before the RIDICULOUS bargain that is the E-MU 0404 PCI @ £54) this new firewire card absolutey rinses the X-Fi and indeed the Xonar that preceeded it.
I just truly feel these gamer cards are a rip off for what they are. Looking at the site, there is an X-Fi for £240! Are Creative having a laugh?! Seriously?? £240 for a gaming card?!
The worst part is - the product description refers to "audio creation". In my youth, I was ignorant over soundcards. I bought the then top of the line Audigy 2 Plantinum something a rather...I thought it was the absolute bees knees untill I tried to do any recording on it in Cubase SX. I then quickly realised (after studying Music Technology A level) that the Creative cards were indeed a complete joke in terms of audio production. I moved to a M-Audio Delta 66 for ~£100 and was AMAZED at the difference not just in sound quality but in latency and driver stability.
Seriously guys forget the gaming cards - I am lucky enough now to own a professionally acoustic treated recording studio and have A/Bed multiple cards (with several different producers and engineers) and the budget semi-pro soundcards ALWAYS come out on top. Always...
Don't get me wrong here - I am a gamer to. I love video games. But I also happen to have an insight into professional audio and what is being sold as 'premium' soundcards to the gaming market is frankly, one of the biggest marketing scams I have ever seen.
Don't just take my word for it though. Have a listen for yourselves. I even saw the M-Audio Audiophile 2496 (which btw is a BARGAIN for what it is) in a certain high-street retailer the other day for ~£70. I installed this card in every single PC I built for the music tech lab at the college I teach at and it is sonically, a beast! The fact you can pick one up in a non-specialist shop is a testament to how accesible audio production has become these days. Theres no reason why you can't buy one and try it out for a week (you can presumably always take it back if you don't like it) but the important thing to do is A/B it with your current gaming card. In Winamp for example, you can manually select which outputs (and indeed which device) audio is sent through.
Make sure to load up a song which you know well and try both. You will be amazed at the sonic quality a 'budget' pro sound card will give you over a 'premium' gaming card.
Rant adjourned people! haha! Think I'm getting RSI from all this typing...