Ciao
the choice depends on various factors first of all it depends on which HW the ESXi host runs on.
From personal experience to use tools such as Solidworks or AutoCAD (and similar components), you must have NVIDIA A10 or A40 video cards and the VMs must run on datastores located on volumes with high-performance disks, with all the necessary licenses.
Then it also depends on whether you need only one VM that uses Autocad and connected components or multiple VMs.
For just one VM it might be right to use Fusion (obviously you miss out on all the benefits of vSphere infrastructure