Well, you ARE recording straight out of a GT3, so it is going to sound pretty harsh and digital anyhow. When I ran my pedals straight into my Audigy Platinum, which I did ONCE, it sounded like complete digital crap. But when I've mic-ed an acoustic, vocals, or a distorted amp, running my Oktava MK-319 through my ART StudioV3 into the Audigy, I get a completely passable and low noise recorded sound. Sounds very much like the sound heard in the room. It's definately not as good as my friend's 8-track reel-to-reel (has a richness and ambience to it), but it's more than good enough for home recording demos, jams, etc.
If you're getting too much noise after getting the levels +6db, because of the Audigy's limiting on your recorded tracks, then you need to do something to fix the SOURCE, rather than the recording hardware.
Would I reccomend it for folks recording CD's to be pressed, distributed and sold? No. An Audiophile? No. To someone wanting to put ideas down digitally in near CD quality? Sure.