So while I had the car up in the air to do camber arms, I figured I'd follow up with a long term review of this exhaust since it seems we don't get too many long term tests on aftermarket parts. After about 5 years about 20k miles it has held up fantastically. I couldn't expect any more from an aftermarket system, much less a $600 one. The tone has changed slightly. It's a little more on the raspy side, but not much more volume. I have only seen a tiny bit of surface rust on the hangers but none on the rest of the system (welds included). It hasn't developed any rattles or leaks, and the fitment is still spot on.
here's some pics of it's current condition
here's the small bit of surface rust i've spotted
honestly i'd still recommend this system for anyone wanting a good exhaust on a budget. this is still one of my favorite mods and i have no plans to change it any time soon.
PSA: keep your exhausts clean and polished and any system can last you a long time