This is the comparison post I attempted to add as new thread yesterday.
Yesterday, I installed VMWare Fusion 4.01 on Lion and compared it against PD6 and PD7 which I also ran on Lion. I used my Windows 7 Ultimate 32-bit VM do do this comparison. Here are my findings:
PD6 Windows Index Numbers:
Processor: 4.7
Memory: 4.5
Graphics: 5.7
Gaming graphics: 4.9
Primary hard disk: 6.5
VMWare Fusion 4 Windows Index Numbers:
Processor: 4.6
Memory: 4.5
Graphics: 5.9
Gaming graphics: 4.9
Primary hard disk: 6.3
PD6 vs. PD7 Windows Index numbers:
Desktop performance for Windows Aero fell from 5.9 to 5.2
3D business and gaming graphics performance fell from 5.2 to 4.9
The other numbers are identical
Full Screen/Mission Control Feature Comparison:
Keep full screen in desktop #2: PD6 = Yes, PD7 = No, Fusion = Yes
Notes: PD6 and Fusion both allow the VM to be assigned to desktop #2 which allows me to use a configured hot key to switch to it. PD7 uses Lion's Full Screen app feature which puts the VM in its own desktop. That desktop cannot be configured with a hot key. In my opinion, this is a significant regression from PD6.
Show menu bar at bottom left: PD6 = Yes, PD7 = No, Fusion = N/A (shows mini menu at top)
Notes: PD6 allows the bottom right hot corner to be assigned to Show Menu Bar. PD7 does not allow "Show Menu Bar" to be assigned to the bottom left or right hot corners. Fusion does not require this because it shows a mini menu bar at the top of the full screen VM. In my opinion, this is a bug inside PD7.
Suspend/Resume Comparison
On my system, all three products suspend and resume my VM with similar performance. On PD6, resuming the VM will cause the VM to display on the active Mission Control desktop and not the desktop assigned to PD6 (this bug was reported but not fixed). On PD7, the VM is resumed to a new desktop (see Full Screen above). Fusion resumes the VM to the assigned desktop regardless of which desktop is currently active.
Idle CPU Usage
All three products are similar. Idle CPU usage hovers between 2 and 3%