I love my HARX700's. I didn't dynamat, all I did was the felt removal mod to add a little more definition to the mid/treble, and stuffed some foam behind the earpads for comfort and added bass on the lower end. Neither are massive changes, but both helped. The biggest help was having a decent sound card that can output a lot more power out of the 3.5mm jack than onboard jacks can, and with a good EQ like what I've used with Creative's Console on my X-Fi cards and Auzen X-Fi, that's where the difference really lies. The HARX700's need some EQ tuning and even some bass boost if you want some serious bass...they'll shake the cups and shake on your head with a decent sound card, get a card like the Auzen that has a dedicated headphone amp and they get even louder and more defined. Really find yourself a decent Auzen, Creative, Asus sound card. My main experience is with the X-Fi Extreme Music, the X-Fi Audio, and the Auzen X-Fi Forte sound card wise and all did damn awesome. Think of it this way though, if your music sounds good, then your games will too, at least in my experience that's how it's played out thus far! I'm not saying you need an X-Fi, but that's just what I've gone with and everything I listen to after taking some time to tune sounds great to me. Each set of ears will hear things differently and you'll prefer a different sound too, which is why having a good EQ and tunability is a MUST imo. See what you can find used, if you could snag a used X-Fi Xtreme Music for $50 shipped or less, that's what I'd jump on imo...if not, look for something in the $75-100 range new imo. I'm not hardcore into soundcards, and I got a helluva deal on this Forte last summer, otherwise I wouldn't have purchased it. But in reality, while the headphone amp is nice, it was not required...I could still be on my old, cheap x-fi and still be happy as hell. It also depends how loud you wanna go, you might consider skipping an add-in sound card and using a headphone amp ran from your onboard's digital output...though that option can get really pricey, really fast. I'm considering trying the Creek OBH11 someday to see how a real headphone amp does, not sure if that takes digital signals though. Take a read through, but really, bang for the buck, the JVC HARX 700's can't be beat imo!