i'm using Reason & Orion to make loops to be sequenced together in Acid Pro 4.0

i'm starting to get very fussy about my basslines. i'm big into overloaded sounds but i also make clean loopy stuff (think DE9) and i'm starting to want to push the basslines further in the mix but not to dominate the hi end.

i can achieve this with may hardware but cant quite get the full round sound from the pc.

as far as the hard stuff goes, dirty is good, but i want to get big clean round bass for my minmil trax & while the bass loops are fine in Reason, Orion or on their own in Acid, once i put the percussion in & even the smallest big of compression, things start to get dirty. very slightly, but i can her it on headphones & its starting to piuss me off.

any help or suggestions will be greatly appreciated.