I am looking to put an exhaust on my Grand Cherokee any recommendations? No headers though it will nulify my warrantee

my friend has a '97 jeep grand cherokee and he just put on a borla exhaust system, he's pretty happy with it.

I recently installed a exhaust on my 2000 GC Limited. I cut the pipe at the cat and installed a 3 inch pipe that went into a Flowmaster 50 series suv muffler. Then I had a 3 in chrome tip installed. It is the perfect upgrade if you want a deep note, but nothing too loud in the main cabin.