Summit exhaust systems, are they decent?

My only experience with Summit's house brand exhaust is GT fox Mustang, but it has been a very positive one. Very high quality mandrel bend pipes and high quality mufflers from a big industry supplier. Hangers could use a little upgrading, but there was really nothing wrong with what was supplied.

Fact is if I had ever taken the time within a couple of days of my install (I put it on in an afternoon with the car on a couple of jack stands in a borrowed garage in a city far, far away from home) to eliminate the rattles by a little tweeking of the joints and hangers, I wouldn't be the only one that doesn't hear them anymore.

As an aside, it truly is just about the best sounding exhaust on anything I ever owned (and I've owned more than a few cars over the years).