DelCam is the best I have seen
DelCam is the best CAM system that I have seen when it comes to HSM routines. They have really done an unsurpased job of building toolpaths with smooth motion lead in's and out's. I have not seen anyone else do the Knowledge Of Stock remaining (KOS) as well either. The resulting finishes in the finished product are far better than any other system out there.
PowerShape and PowerMill are both excelant products, and you should consider using both. PowerMill is not made for designing...
The Cad side is not that expensive though. Using a hybrid 3D modeler is much better than using solids only. Being able to create surfaces mixed with solids is a huge benefit. The Cam is a bit pricy, but you really get what you pay for on these products. The automation capabilities are better than anyone else!
Although I am not yet a user, we are in the middle of the justification process ourselves... This is a product speciallizing in model machining and 5 axis stuff. I don't think it does turning for instance, but I don't know...
Good choice...