The Pulse flies very well with no bad habits. But it very lightly constructed, so it will be short lived if you don't land on the wheels on the runway. Of course the same could be said about most of the ARF's built from lite-ply.

The Sportster flys well too, though it has a bit heavier feel (higher wing loading). I've always thought of the Sportster as a overweight clone of some of the old Andrews designs, like the Trainermaster or Sportmaster. They were excellent designs from the mid-60's that had great aerodynamics and a rugged balsa construction that could survive incredible abuse. Radios were not so reliable back then and a lot heavier, so tough light airframes were a good thing.

Now for the good thing. The Pulse flies almost as good as the Andrews designs do with modern light radios.