Graphically, nRoute is really like MapSource. Its main interface usually presents a map view instead of the usual GPX track so that you can easily tell the track and which direction the track is facing. It also has a number of other useful features that you will easily find it hard to live without.
Here are some more screenshots of nRoute in action:

As you can see, nRoute takes advantages of the system performance. It has the same performance as would be experienced 50e0806aeb hertfolt