I have worked with VMware products for just over 5 years at this point, and during that time frame have compared with competing virtualization products. I believe that VMware Esxi is the BEST hypervisor available. If you have a virtualization project then this is the route to go, although I will concede that MS Hyper-V may be appropriate for some small businesses with just a couple of servers to virtualize.
Deploying Esxi is very simple, install the package on the host, open the vSphere client, and you are ready to go. The setup can be very simple if you are using local storage, or in-depth if using network storage and wanting to customize the virtual network configuration. regardless, the tasks are simple and easy to understand. If you run into an issue, VMware documentation is very helpful and their support team glad to assist.