Personally I like the Magnaflow, nice and mellow ... unless of course you install a race header or ORP, then most all of them get kinda loud. I installed a long flow through resonator on my Magnaflow system to quiet it back down. However, after saying all that, I have to admit that I like the sound of the FS systems. The standard is great if your not using an ORP or race header and the stealth if you are. The only thing I don't like about the current FS systems is the single wall tail pipe, I prefer the double wall as used in the Magnaflow, Borla, and a couple of others. We have very large mod g2g's here and it's given me an opportunity to hear just about every system on the market both with and without an ORP or race header. And still, I prefer the sound of the Magnaflow and FS systems. I also like the sound of the Bosal but don't really care for the big muffler hanging below the bumper. The borla also sounds good, a tad louder than the other systems mentioned above, and every Borla I've heard with an ORP or race header is VERY loud. But then again, that's just my opinion .... what's loud to me may not be for others.