PS- also investigate the possibilities of Mastercam for Solidworks, You must also have purchased Solidworks beforehand. This mastercam does NOT have all the same functionality as a full blown Mastercam version It can be added on later if your capability changes. IMO, your price to hunt for is for Mill level 3 with SOLIDS, that is if you don't have a 4th axis.

The full 4 or 5 axis option allows programming to use the machine it's fullest capability Ie rotate to an angle then run a 3 axis or 3D surfacing operation. using the rotary axes for (3+1 or 3+2) positioning only.

Multiaxis is for programming rotary movement. If you don't have SOLIDS, then you cannot move, modify, create anything within Mastercam You can use a 3rd party CAD to create your solid models, but that can (at times) be a *****. If you are doing molds etc, by ustilizing surface machining, then Mill level 3 would be the starting point. add-ons to any of these levels can be 'SOLIDS' & 'FULL 4 and 5 AXIS MACHINING' Learn what is available HERE at CNC Solutions for milling

Mastercam 2021 price