Rhino3D, every version
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It's a highly technical and accurate NURBS package, but very easy to use. It's actually more like using a 2D cad package like TurboCAD.
I have 3DS Max 9, which I use for hierarchy animation and tidying up normals and welding etc. I'm not sure if I've even made a model in any other package but Rhino that I could call a model. So, if all these packages mystify you, give Rhino a try for technical modelling (making weapons, vehicles, buildings etc). I usually make a NURBS base model, then convert it to a mesh and vertex edit it.
Attached a screenshot if anyone is interested.