I just picked up some roush axleback exhausts a few weeks ago. They're great. I wasn't expecting but theyre loud AF. After starting it and letting it idle, the idle sounds awesome. Theres just this low bass tone to them.. They get a little raspy around 35k but they're awesome. I may consider resonators to lighten up the rasp and give it a more throaty tone.
Not a fan of magnaflows, my dad has them on his gt and they are okay. Not anything special though. My opinion is it could definitely sound better.
Those ford racing's sound great. Haven't heard them in person but they're probably somewhat similar to the roush exhaust (since it's a ford bi product)
Check out Dillons sixxer with roush axlebacks and glasspack resonators. The comp speakers don't do it justice for being in person. Still sounds awesome tho.