For box modelling and poly by poly modelling, Blender is the fastest of all applications I've tried.
Blender is weird but predictable too. For example the keys GRS (grab, rotate, scale) works in different areas (3D, UV, animation, NLA, video editor) where it makes sense (in some there's no rotation). The UI overhaul of 2.5x moved stuff in a more logical order. If you understand the concept of "data blocks" and "users", you'll understand most of Blender.
Blender is weird but predictable too. For example the keys GRS (grab, rotate, scale) works in different areas (3D, UV, animation, NLA, video editor) where it makes sense (in some there's no rotation). The UI overhaul of 2.5x moved stuff in a more logical order. If you understand the concept of "data blocks" and "users", you'll understand most of Blender.