I did the AWE Track + APR Downpipe about 3 months ago, and it sounds great. I jumped around between a few brands, heard a bunch, but ultimately pulled the trigger on this one because of all the positive feedback. It is really good sounding.
From what I've seen and heard both in videos and in person, some exhausts produce a more tractor-y sound, or sound muffled when they should be loud. This doesn't. There's a good cold start sound (especially in the ~30 degree weather we've had), and a manageable amount of drone. DSG farts sound much more explosive, if that makes any sense.
Installation is like any other exhaust would be, though I do agree that APR did a better job by adding the extra hanger. My muffler sags just enough to scrape higher speed bumps, so that's something I have to revisit once the weather gets warmer.
Otherwise, it sounds excellent. It's deep enough to not be totally ricey, but loud enough when you want it to be.
My input, take it how you want.