I love Xara Xtreme! I use it all the time for vector work. In fact, most of the design for this site was done with it! The main thing that keeps me using it time after time is the incredibly fast rendering engine speed.
The world went crazy for the iPhone, thousands of us have bought one and hundreds of talented developers have created applications that we can all download on it. Luckily, quite a few are very useful for web designers!