Considering your need (if i've got it right) for a good 3d package integrated with FEM, you have the choice of two levels: 1st the big boys : UG , CATIA , PRO-E; 2nd level: SolidWorks and SolidEdge. As I am working the CADCAM field for over 18 years, I can afirm safely that the capabilies are...
Highest level of CAD software : CATIA , UG , PRO-E
Second level : SOLIDWORKS , SOLIDEdge (Cimatron?)
Third level :Autocad
And from down there a plethora of others