VMWare or Windows Hypervisor

that becomes an almost religious discussion.  Me being a Windows guy will say use Hyper-V  partially because it comes with your server, it is easy to manage, easy to config, and no extra knowledge of command line needed.  
Mind if you want more bells, more solid feature set, and a more mature hypervisor then use ESX.  

they are both great hypervisors.

I suggest you use what you are comfortable with. We have used VMware ESX before and it works very well. I like the VMware features and flexibility and (as noted above) it has been around longer.

Both work.

Hyper V
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Windows based
Should Consider server hang and Virus concerns
But doesn't require separate license for hyper visor
You may get frequent patches for the hypervisor. It require the restart


Vmware
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Linux based kernal
Small footprint
Stable compared to hyper v (as per my experience,)
Separate license required
No much patches and virus concerns compared to hyper v
You can get good technical support from vmware

Either should be just fine. For just running a couple of VMs, there really will not be much difference.

You might want to avoid VMware if this is not an "real" server though. VMWare installs and runs great on anything on the list of supported machines, but can sometimes be tricky to get running on "generic" hardware. Windows has a much greater range of drivers.

Usually not always ..server manufacturers publish papers that provide detailed information on setting up virtual servers on virtualized environment.Since you already set for two specific guests probably it would be a good idea to make a search like
" YourServerManufacturer TheHypervisor Exchange 2016"

both are good Hypervisors.

Microsoft's is cheaper!

Should Consider server hang and Virus concerns
You may get frequent patches for the hypervisor. It require the restart

Please provide references/proof. This is just a bias opinion, not a fact

Here are some comparison tables/charts
https://www.google.com/search?rlz=1C1GCEA_enZA831ZA831&biw=1535&bih=744&tbm=isch&sa=1&ei=q3eCXIaeMbnJgwfV-5LQBQ&q=hyper+v+vs+vmware&oq=hyper+v+vs+vmware&gs_l=img.3..0j0i8i30j0i24l8.42736.42736..43157...0.0..0.337.337.3-1......1....1..gws-wiz-img.IyEeZniccxU

I think most of the comments some it up, either is a great choice.  But I will ask another questions as it may change answers.

Question:  Will you be expanding how many VMs and do you plan to cluster more than one server in the future for HA?

My experience is that Microsoft makes that process a little more complex then VMWare, but you would still require VMWare licensing.

As mentioned it all comes down to what you are comfortable with.  if you are a command line or Linux guy then VMware may be the better solution.  if you are a gui guy then windows by far will be the better solution.  

the comment about virus's may not have been entirely accurate.  true VMWare has never to my knowledge had a successful virus outbreak, it does have its fair share of breakage.  when it breaks it breaks hard.  and it sometimes takes a call to VMware to fix.  you will not get free support unless you pay for ESXI (as opposed to ESX which is free)  the community is far better for Windows than it is for VMware on the support front.

Trial them both.... VMware vSphere has a GUI (it's web driven with a browser!) ... is that not GUI enough!

You only need to use the shell for trouble shooting, if asked by VMware Support, and they will guide you!