2d physics engines libraries for .net

So far I have found three different 2d physics engines for .NET:

• Farseer Physics Engine http://www.codeplex.com/FarseerPhysics (http://www.farseergames.com/)
• Physics2D http://code.google.com/p/physics2d/
• Box2dx http://code.google.com/p/box2dx/ famous Box2d ported to .NET

Currently I play with Farseer, but Box2d also looks very interesting, I think that as soon as I finish ceres level editor I’ll try Box2dx. So far I couldn’t find enough time, I thought I’ll be able to upload it by the end of April, but it seems now it will be end of May …