Just the facts:
VMWare upgrades cost the same as Parallels, and the support for old versions lasts about the same (~2 years). But yes, VirtualBox is free albeit it doesn't achieve the same results in benchmarks, so if performance, specially 3D performance is not important to you, yeah, sure, VBox is a great alternative.
I just don't see what VMWare has to give in this subject, version 3 of Fusion also doesn't work under ML, version 4 only if it's the latest build, a only version 5 is fully supported. Pretty much the same situation as with versions 6, 7 and 8 of Parallels Desktop.
http://kb.vmware.com/kb/2032208
If you don't agree with this product life cycle support policy in Parallels then be aware if you intend to buy VMWare Fusion you'll be getting exactly the same 2 years support policy (counting from the time the version is launched not for when you buy it).
Last edited by a moderator: Mar 2, 2013