I had a vortex Muffler on my truck for a few years and loved it
When I got my exhaust re-done for the body lift I got a flowmaster 40 series just to try something different, it sounded almost identical to the flowmaster, but I thought the vortex was louder in a better way. Meaning it had a little more of a growl to it than the flowmaster. If I had to redo my exhaust again I'd get a vortex most likely.
Sorry I have no clips though of the vortex, just the flowmaster.