Company 4Front Tecnologies has released new cool 3D stereo enhancement plugin. I personally think, this one is the best. Demo version and full description is available on http://www.oss3d.com
I have posted this plugin to "plugin" section, but seems, it doesn't want appear there... :] So use http://www.oss3d.com
Full version (costs $10) has much more amazing features, which can really really enhance your sound.
I have downloaded most of DSP plugins... They all ruin the sound, while OSS/3D doesn't... If the overload occurs during very heavy crazy effect usage (if extremal settings are used, etc...), I simply lower "preAmp" slider and have the normal sound back.
Demo version contains only ONE 3D stereo expanding effect, while full version contains FOUR. Anyway, even the demo is better than those DSP effects are available
Download and test, and perhaps you'll be the fan too
Note, that OSS/3D works with stereo sound only, and the best effect is gained with default settings on standard music styles (hardcore, punkrock fans may have to change settings a bit).