I agree with Solman that the 21" would be too long for a high mount - but it seems ok for the standard mount mid-pipe.
The new ones don't have the logo on the side anymore like the photo posted above. They have a very subtle etched logo on the end cap instead. Much nicer in my opinion and it doesn't call attention to the fact that it is an aftermarket pipe.
I think the real question about any modification or product is "Would you do it again?" In the case of this pipe, my answer is "yes, definitely!".