I highly recommend Parallels as a virtualization solution – great features, user interface, capability, and (perhaps most importantly) active and regular updates.

Coherence mode is an amazing feature that lets you run applications inside a virtual machine but you interact with them as if they were running along side of native Mac apps!From time to time, I will load up some of the other products available on the market today (both commercial and open source), but they always find their way to the recycle bin.

I've worked with many different virtual machine products over the years, and this is the easiest to set up, has the best integration features, and the performance is great

One of the best features I think is the coherence mode that allowed me to be in the native mac looking screen but brought the VM that I was running into it.