I'm looking to remodel a few rooms in my house (tear down some walls, change plumbing etc) and I'd like to know what the best software is for drawing and planning is (floor plans / blueprints)? Is Google sketchup right for this since this isn't 3D drawing but 2D? Any suggestions for mac software? I'd like to keep the price down but don't want to work with buggy or incapable tools.