If you look for a new COA software, dont look at entry level one i.e : SolidWork, SolidEdge, Inventor. Since about a years the big CAO system Are about the same price(about 1 to 1.5k$ more) and they have alot more to offer. We use CATIA V5R9 with CamPost post-processor and we are very happy with it. I'm about to mill parts for mw54 turbine ( diffusor). My only concerne by now is that i will use 4 axis for the first time